Search results “Principles of evolutionary theory”
Natural Selection - Crash Course Biology #14
Hank guides us through the process of natural selection, the key mechanism of evolution. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/theCrashCourse Table of Contents: 1) Natural Selection 1:27 2) Adaptation 2:56 3) Fitness 3:36 4) Four Principals 3:54 a. Variations 4:01 b. Heritability 4:17 c. "The Struggle for Existence" 4:25 d. Survival and Reproductive Rates 5:00 5) Biolography 5:59 6) Modes of Selection 7:40 a. Directional Selection 8:17 b. Stabilizing Selection 8:56 c. Disruptive Selection 9:27 7) Sexual Selection 10:22 8) Artificial Selection 11:24 References for this episode can be found in the Google document here: http://dft.ba/-2Ank This video uses the following sounds from Freesound.org: "20071104.forest.04.binaural.mp3" by dobroide "ForestBirds.wav" by HerbertBoland crashcourse, science, biology, natural selection, genetics, peppered moth, inherited traits, population genetics, charles darwin, darwin, on the origin of species, evolution, adaptation, galapagos finches, fitness, variation, phenotype, heritable, malthus, survival rate, reproductive rate, crossbreeding, inbreeding, genotype, directional selection, stabilizing selection, disruptive selection, selective pressures, sexual selection, artificial selection, selective breeding Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1754218 CrashCourse
Charles Darwin - The Theory Of Natural Selection
Learn a bit about Charles Darwin's Theory of Natural Selection with this neato cartoon. There are giraffes and stuff! ----------- VOICES- Narrator - Rebecca Duenow Darwin - Chris "Mo" Mochinski Chalk - Chris "Mo" Mochinski DIRECTED BY - Rebecca Duenow ANIMATION - Chris "Mo" Mochinski Created with Anime Studio Pro 9.5, Pixelmator, Logic Pro X and iMovie. All artwork is original except the chalkboard background, c/o Shutterstock.com.
Views: 401628 Chris Mochinski
What is the Theory of Evolution?
What is Charles Darwin's Theory of Evolution? Let us not get controversial, but simply stick to the facts about Charles Darwin and his theory of Evolution.  An English Naturalist, Mr. Darwin definitely gave us all a lot to think about. Darwin's theory of evolution actually contains two major ideas.  The first idea posed by Mr. Darwin theorized the idea that evolution occurs. In other words, organisms change over time, and life on Earth has changed as descendants diverged from common ancestors in the past. The second idea from Mr. Darwin is that evolution occurs by natural selection. Natural selection is the process in which living things with beneficial traits produce more offspring than others. This results in changes in the traits of living things over time. In Charles Darwin's day, the early 1800's, most people believed that all species were created at the same time and remained unchanged thereafter. They also believed that Earth was merely 6,000 years old. Darwin's ideas revolutionized biology as we know it! How did Mr. Darwin come up with these important ideas? It all started when he went on a voyage. In 1831, when Darwin was just 22 years old, he set sail on a scientific expedition on a ship called the HMS Beagle. He was the naturalist on the voyage. As a naturalist, it was his job to observe and collect specimens of plants, animals, rocks, and fossils wherever the expedition went ashore. Darwin was fascinated by this nature, and his job on the Beagle was the most important time of his life. He spent over 3 years of the 5-year trip exploring nature on distant continents and islands. While he was away, a former teacher published Darwin's accounts of his observations. By the time Darwin finally returned to England, he had become famous as a naturalist. During the long voyage, Charles Darwin made many observations that helped him form his theory of evolution.  Some of what he found included: -- Tropical rain forests and other new habitats where he saw many plants and animals he had never seen before -- An earthquake that lifted the ocean floor 9 feet (2.7 meters) above sea level. -- He also found rocks containing fossil sea shells in mountains far above sea level. These observations suggested that continents and oceans had changed dramatically over time and continue to change dramatically. -- Rock ledges that had clearly once been beaches that had gradually built up over time. This suggested that slow, steady processes also change the surface of the Earth. -- Fossils of gigantic extinct mammals, such as the ground sloth This was hard evidence that organisms looked very different in the past, as it suggested that living things, including the Earth's surface, change over time.
Views: 276265 red Orbit
How Evolution works
The mechanisms of evolution explained in one video. The theory of evolution explains how the enormous variety of life could come into existence. How it is possible for primitive life forms to spawn the millions of different creatures, that exist today. Unfortunately, evolution is often misunderstood, because it's mechanisms seem counter intuitive. By using visualizations, infographics and appealing characters, the viewer is more likely to understand it the complex information. More than that, by presenting the information in an entertaining way, the information is more likely to sink in. Short videos, explaining things. For example Evolution, the Universe, Stock Market or controversial topics like Fracking. Because we love science. We would love to interact more with you, our viewers to figure out what topics you want to see. If you have a suggestion for future videos or feedback, drop us a line! :) We're a bunch of Information designers from munich, visit us on facebook or behance to say hi! https://www.facebook.com/Kurzgesagt https://www.behance.net/kurzgesagt How Evolution Works Help us caption & translate this video! http://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2
Evolution: It's a Thing - Crash Course Biology #20
Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse Table of Contents 1) The Theory of Evolution 1:49 2) Fossils 2:42 3) Homologous Structures 4:36 4) Biogeography 7:02 5) Direct Observation 8:52 References for this episode can be found in the Google document here: http://dft.ba/-2Oyu evolution, theory, biology, science, crashcourse, genetics, gene, facts, fossil, fossil record, dinosaur, extinct, extinction, organism, dorudon, rodhocetus, vestigial, structure, similarity, homologous structure, related, relationship, morganucodon, fore limb, hind limb, vertebrate, molecule, DNA, RNA, chimpanzee, fruit fly, biogeography, marsupial, finches, direct observation, drug resistance, resistance, selective pressure, italian wall lizard Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1401474 CrashCourse
Introduction to Evolution and Natural Selection
Introduction to evolution, variation in a population and natural selection More free lessons at: http://www.khanacademy.org/video?v=GcjgWov7mTM About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.
Views: 1919735 Khan Academy
Fact vs. Theory vs. Hypothesis vs. Law… EXPLAINED!
Think you know the difference? Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Some people try to attack things like evolution by natural selection and man-made climate change by saying “Oh, that’s just a THEORY!” Yes, they are both theories. Stop saying it like it’s a bad thing! It’s time we learn the difference between a fact, a theory, a hypothesis, and a scientific law. Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below! Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe Follow on Snapchat: YoDrJoe ----------------- It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D. Follow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen Inc. Kate Eads - Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Camera John Knudsen - Gaffer Theme music: “Ouroboros” by Kevin MacLeod Other music via APM Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted)
Views: 554611 It's Okay To Be Smart
Classical Management Theory
Classical Management Theory, broadly speaking, is based upon Henri Fayol, Frederick Taylor, and Max Weber's overlapping management theories. These three management theories came together to form what we generally refer to nowadays as Classical Management Theory. Virtually all areas of organizational studies from management, to business, to organizational communication put these three theorists at the foundation of most modern day organizations for developing theories of 1) Administrative science, 2) Scientific Management, and 3) Bureaucracy. Taken together, they form the basis for how we organizational structures and relationships between managers and employes. https://www.amazon.com/gp/product/1433131234/ref=as_li_tl?ie=UTF8&tag=alexlyon-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=1433131234&linkId=6bfd9c333c786d16025c5a7c70a3ef4c The Organizational Communication Channel provides supplemental lessons for traditional, hybrid, and 100% online courses for students and teachers everywhere. My Current Camera Gear (Affiliate Links): Camera Rebel T5i https://www.amazon.com/gp/product/B00BW6LWO4/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=alexlyon-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00BW6LWO4&linkId=504e12f13100f143d4df4e79731f206a Lens Canon 50mm: https://www.amazon.com/gp/product/B00X8MRBCW/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=alexlyon-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00X8MRBCW&linkId=b0bfb7ea7439df39e744bfd303c53fee USB Microphone Blue Yeti: https://www.amazon.com/gp/product/B002VA464S/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=alexlyon-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B002VA464S&linkId=a9d8b41ead5eb30f69342be95d3a3d22 Lavalier Microphone Rode Smartlav+: https://www.amazon.com/gp/product/B00EO4A7L0/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=alexlyon-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00EO4A7L0&linkId=c29c80d531374d347f8a78498b34d05d Audio Recorder: Tascam DR-05: https://www.amazon.com/gp/product/B004OU2IQG/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=alexlyon-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B004OU2IQG&linkId=578b149b5807f2ec0f7f16c18e1c34f4
Five fingers of evolution - Paul Andersen
View full lesson: http://ed.ted.com/lessons/five-fingers-of-evolution How can a "thumbs up" sign help us remember five processes that impact evolution? The story of the Five Fingers of Evolution gives us a clever way of understanding change in gene pools over time. Lesson by Paul Andersen, animation by Alan Foreman.
Views: 690740 TED-Ed
Microevolution - Macroevolution
Watch more videos on http://www.brightstorm.com/science/biology SUBSCRIBE FOR All OUR VIDEOS! https://www.youtube.com/subscription_center?add_user=brightstorm2 VISIT BRIGHTSTORM.com FOR TONS OF VIDEO TUTORIALS AND OTHER FEATURES! http://www.brightstorm.com/ LET'S CONNECT! Facebook ► https://www.facebook.com/brightstorm Pinterest ► https://www.pinterest.com/brightstorm/ Google+ ► https://plus.google.com/+brightstorm/ Twitter ► https://twitter.com/brightstorm_ Brightstorm website ► https://www.brightstorm.com/
Views: 43772 Brightstorm
What is Evolutionary Theory?
Richard Lewontin, Science Board, Santa Fe Institute November 11, 2003 This lecture will discuss the origins of the theory of organic evolution, what the basic structure of Darwin's theory was, what evolutionary theory is really meant to explain and how the modern understanding of the process of evolution is different from Darwin's original idea. It will also discuss what the deep problems of evolutionary explanation are and why evolution differs from the usual simple model of what is required of a science.
Views: 10978 Santa Fe Institute
Hardy Weinberg Principle
This lecture explains about the Hardy Weinberg principle in details. The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences. It states that the gene frequency will remain constant in a population if there is no evolutionary influences. For more information, log on to- http://www.shomusbiology.com/ Get Shomu's Biology DVD set here- http://www.shomusbiology.com/dvd-store/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching We are social. Find us on different sites here- Our Website – www.shomusbiology.com Facebook page- https://www.facebook.com/ShomusBiology/ Twitter - https://twitter.com/shomusbiology SlideShare- www.slideshare.net/shomusbiology Google plus- https://plus.google.com/113648584982732129198 LinkedIn - https://www.linkedin.com/in/suman-bhattacharjee-2a051661 Youtube- https://www.youtube.com/user/TheFunsuman Thank you for watching
Views: 92031 Shomu's Biology
11. Life History Evolution
Principles of Evolution, Ecology and Behavior (EEB 122) Life history covers three main classes of traits in organisms: age and size at maturity, number and size of offspring, and lifespan and reproductive investment. Organisms must make tradeoffs among these traits that typically cause them to come to evolutionary equilibrium at intermediate values. Life history traits are evolutionary solutions to the ecological problems of the risk of mortality and the acquisition of food, and they are expressed in reaction norms that determine the particular traits that an organism will exhibit when its genes encounter a specific environment during development. 00:00 - Chapter 1. Introduction 04:53 - Chapter 2. Life History and the History of Ideas 08:56 - Chapter 3. Age and Size at Maturity 23:38 - Chapter 4. Size and Number of Babies 31:49 - Chapter 5. Lifespan and Aging 42:32 - Chapter 6. Summary Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
Views: 18803 YaleCourses
Evidence of Evolution:
Paul Andersen describes pieces of evidence that Charles Darwin used to support the idea of evolution and his process of natural selection. He begins with the following evidence use in the Origin of Species; artificial selection, biogeography, fossils and homologies. He finishes with a discussion of DNA and how it can be used to unravel the evolution of life on our planet. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ All of the images are licensed under creative commons and public domain licensing: "3T3 Cells." Wikipedia, the Free Encyclopedia, July 23, 2013. http://en.wikipedia.org/w/index.php?title=3T3_cells&oldid=565489857. "File:Chathamensis.jpg." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Chathamensis.jpg. File:Darwin-s-tubercle.jpg, n.d. http://commons.wikimedia.org/wiki/File:Darwin-s-tubercle.jpg. "File:Galapagos-satellite-esislandnames.jpg." Wikipedia, the Free Encyclopedia. Accessed October 31, 2013. http://en.wikipedia.org/wiki/File:Galapagos-satellite-esislandnames.jpg. "File:GNigrita.jpg." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:GNigrita.jpg. "File:Homology Vertebrates.svg." Wikipedia, the Free Encyclopedia. Accessed October 31, 2013. http://en.wikipedia.org/wiki/File:Homology_vertebrates.svg. "File:Orthographic Projection Centred over the Galapagos.png." Wikipedia, the Free Encyclopedia. Accessed November 1, 2013. http://en.wikipedia.org/wiki/File:Orthographic_projection_centred_over_the_Galapagos.png. Konversionlexikon, Meyers. Deutsch: Skelett Eines Bartwales (a - Schulterblatt, b - Vorderbein, c - Rest Des Hinterbeins), 1988. Meyers Konversionlexikon 1888. http://commons.wikimedia.org/wiki/File:Whale_skeleton.png. Lilyu. Friendly Stickmen, December 17, 2008. Own work. http://commons.wikimedia.org/wiki/File:Friendly_stickman.svg. publisher, Bain News Service. Charles Darwin. 1 Negative : Glass ; 5 x 7 in. or Smaller. From a Photograph by Elliott & Fry. According to Gene Kritsky, Maintainer of an Archive of Darwin Photographs, This Was from a Photography Session at Darwin's Home, Down House, and on Another Photograph from That Session Darwin Wrote "1879" on the Back. It Was Later Widely Sold and Distributed on Heavy Card Stock by Elliott & Fry, with a Caption Dating It "Circa 1880". It Was Later Reproduced in a Wide Range of Darwiniana., 1879. Library of Congress[1]. http://commons.wikimedia.org/wiki/File:Darwin_restored2.jpg. version, Original uploader was Mcy jerry at en wikipedia Later. English: en:Evolution of En:horse, February 5, 2006. Transferred from en.wikipedia. http://commons.wikimedia.org/wiki/File:Horseevolution.png. Weston, Mike. Lonesome George, December 10, 2006. Flickr: Lonesome George 2. http://commons.wikimedia.org/wiki/File:Lonesome_George_in_profile.jpg. Yourdon, Ed. Little Girl Whispering Something in a Woman's Ear., July 18, 2009. originally posted to Flickr as Let me tell you a secret. http://commons.wikimedia.org/wiki/File:Let_me_tell_you_a_secret.jpg. Zell, H. Deutsch: Evolution Der Pferde. Zusammengestellt Aus Skeletten Des Staatlichen Museums Für Naturkunde Karlsruhe, Deutschland., September 29, 2010. Own work. http://commons.wikimedia.org/wiki/File:Equine_evolution.jpg. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License
Views: 246538 Bozeman Science
What is Evolution?
Support Stated Clearly on Patreon: https://www.patreon.com/statedclearly Evolution is often considered a complex and controversial topic but it's actually a very simple concept to understand. Watch this short animation to see how evolution works. Share it with your friends on Facebook who might be confused or may have been mislead about the evolutionary process. You can learn more about genetics and evolution by visiting our website at http://www.statedclearly.com This video is our first animation with illustrations from the talented Rosemary Mosco. If you don't already know her work, make sure to check out her website at http://BirdAndMoon.com You'll love her biology comics, posters and t-shirts. This video features custom music by AD at Proof Avenue. Check his other work at http://ProofAvenue.com Sources: The definition of Evolution: "Genetic change in a population of organisms; in general, evolution leads to progressive change from simple to complex." - Biology, Seventh Edition, Raven, Johnson, Losos, Singer (college textbook) pg G-6 glossary "Descent with modification...change in the genetic composition of a population from generation to generation." - Biology Eighth Edition, Campbell, Reece (college textbook) pg G-14 glossary "Biological evolution, simply put, is descent with modification. This definition encompasses small-scale evolution (changes in gene frequency in a population from one generation to the next) and large-scale evolution (the descent of different species from a common ancestor over many generations). Evolution helps us to understand the history of life." University of California Berkley http://evolution.berkeley.edu/evosite/evo101/IIntro.shtml Dogs evolved from wolves: http://news.bbc.co.uk/2/hi/science/nature/2498669.stm Thanks to Hedvig Francke for providing Closed Captions in Swedish.
Views: 1653591 Stated Clearly
Darwin's Principles
Darwin's Principles
Views: 254 Alaina Garza
Population Genetics: When Darwin Met Mendel - Crash Course Biology #18
Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse References for this episode can be found in the Google document here: http://dft.ba/-2HbN Table of Contents: 1. Population Genetics 1:05 2. Population 1:14 3. Allele Frequency 1:41 4. 5 Factors 1:58 a) Natural Selection 2:12 b) Natural Selection/Random Mating 2:27 c) Mutation 3:18 d) Genetic Drift 3:49 e) Gene Flow 4:05 5. Hardy-Weinberg Principle 4:45 6. Hardy-Weinberg Equilibrium 5:15 7. Hardy-Weinberg Equation 6:18 gregor mendel, heredity, genetics, charles darwin, natural selection, evolution, offspring, population genetics, species, population, generation, allele frequency, allele, selective pressure, sexual selection, non-random mating, preferred traits, fitness, mutation, DNA, genetic drift, chance, gene flow, immigration, emigration, godfrey hardy, wilhelm weinberg, hardy-weinberg equation, hardy-weinberg equilibrium, phenotype, genotype, earwax, mendelian trait, homozygous, heterozygous, evolutionary biology This video contains the following sound from Freesound.org: "LucasGonze-HomestyleMandolin-17.aiff" by lucasgonze Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 946011 CrashCourse
Darwin's Theory of Evolution: Final Thoughts on Evolutionary Principles
This video is part of the "Evolutionary Theory" lecture series. To see the full list of videos, visit: http://www.youtube.com/playlist?list=PL7E4A78437CC6BE9D For materials associated with this topic visit: http://www.scienceclassisgreat.com/bio/07%20-%20Evolution/1%20-%20Evolutionary%20Theory/ Summary: Mr. Lima talks about the main principles of evolution and reviews the main ideas discussed throughout his description of the evolutionary process
Views: 503 scienceclassisgreat
Biology Evolution part 8 (Adaptive Radiation : Darwins Finches) class 12 XII
Biology Evolution part 8 (Adaptive Radiation : Darwins Finches) class 12 XII
Views: 36844 ExamFear Education
Theory of Natural Selection or Darwinism | In HINDI
Concept Tutorial explains ‘Theory of Natural selection or Darwinism' in the simplest student friendly language and in HINDI. The video will help a lot scoring high in Std 12 board exam and Pre Medical Tests. If you find our videos and our content a great help, guidance and support, kindly donate generously by following the “Paytm” link given below. http://p-y.tm/zU5pf6Ms We invest hours in writing, editing, producing, publishing and managing “Concept Tutorial” YouTube Channel. We use these donations to meet our costs. Our channel offers knowledge, authentic and original student friendly content and detailed information to our audience. Thank you! Find answers to question asked in the video: Answer 1: No, human evolution did not lead to formation of more than one species. Answer 2: Mutation Answer 3: J shaped exponential graph Contents of the video: Charles Darwin & Galapagos Islands- 0:20 Location of Galapagos Islands in Pacific Ocean- 1:04 Darwin’s Finches- 1:25 Thomus Malthus’ Principles of Population- 3:52 Summary of Natural Selection- 9: 37 Evolution of pesticide resistant insects- 10:43 Evolution by anthropogenic actions- 12:40 Criticism of natural selection theory- 14:27 You might find following topics useful: Hardy Weinberg Principle & Genetic drift: https://youtu.be/AKSdi2pMcow Types of Natural Selection: https://youtu.be/-hhpBGB2dMU Chemical & Biological Evolution: https://youtu.be/0OSkcjRUGCw Share this Video: https://youtu.be/nkXakUBAk64 Visit our website: http://www.concepttutorial.in/
Views: 19262 Concept Tutorial
33. Evolutionary Game Theory: Fighting and Contests
Principles of Evolution, Ecology and Behavior (EEB 122) The economic concept of game theory can be readily applied to evolution and behavior. By analyzing encounters between organisms as a mathematical "game," important information such as fitness payoffs and the proportions of "strategies" played by each group within a population can be inferred. While oftentimes these games are too simplified to apply directly to actual examples in nature, they are still useful models that help convey important concepts. 00:00 - Chapter 1. Introduction 03:58 - Chapter 2. Background to Game Theory 09:49 - Chapter 3. The Hawk-Dove Game 21:43 - Chapter 4. The Prisoner's Dilemma 29:18 - Chapter 5. Contextual Biological Examples 40:48 - Chapter 6. Conclusion Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
Views: 19855 YaleCourses
The Principle Of Evolution Is In Creation - Pastor Sunday
The Principle Of Evolution Is In Creation - Pastor Sunday is recorded live from Relationship with God - Pastor Sunday In Ask Pastor Sunday, you will receive answers about sin, the Holy Spirit, God, and Jesus Christ. You will find out what happens when we sin, whether or not there’s a sin God cannot forgive, why sin is bad, how to have a good relationship with God, how to love God more, how to make God proud, how to please God according the Bible, how to be a disciple of Christ, how to have faith in God for everything, how to trust God when everything is going on, how to serve God in spirit and in truth, if it is possible to hurt the Holy Spirit, how to strengthen your relationship with God. To watch all series of broadcasts Relationship with God - Pastor Sunday please follow https://www.youtube.com/playlist?list=PLHEIgEAIukjhxbbpju2tesiPpKT47nI1p You may also listen to a podcast here _________________________________________________________ MORE USEFUL LINKS: Listen & download Free 🔊 https://soundcloud.com/drsundayadelaja Download Free 📲 https://t.me/drsundayadelaja Watch 🎥 https://www.youtube.com/sundayadelajaofficial Stay up-to-date 🔔 https://twitter.com/official_pastor Follow 👣 https://www.instagram.com/sunday_adelaja Read 📰 http://sundayadelajablog.com Like 👍 https://www.facebook.com/Drsundayadelaja Zip files 📚 of all series instantly downloadable: https://fex.net/#!625447785606
Evolution part 2, Darwin's postulates (theory of evolution)
For more information, log on to- http://shomusbiology.weebly.com/ Download the study materials here- http://shomusbiology.weebly.com/bio-materials.html Other naturalists of this time speculated on evolutionary change of species over time according to natural laws. Maupertuis wrote in 1751 of natural modifications occurring during reproduction and accumulating over many generations to produce new species.[21] Buffon suggested that species could degenerate into different organisms, and Erasmus Darwin proposed that all warm-blooded animals could have descended from a single micro-organism (or "filament").[22] The first full-fledged evolutionary scheme was Lamarck's "transmutation" theory of 1809[23] which envisaged spontaneous generation continually producing simple forms of life developed greater complexity in parallel lineages with an inherent progressive tendency, and that on a local level these lineages adapted to the environment by inheriting changes caused by use or disuse in parents.[24][25] (The latter process was later called Lamarckism.)[24][26][27][28] These ideas were condemned by established naturalists as speculation lacking empirical support. In particular Georges Cuvier insisted that species were unrelated and fixed, their similarities reflecting divine design for functional needs. In the meantime, Ray's ideas of benevolent design had been developed by William Paley into a natural theology which proposed complex adaptations as evidence of divine design, and was admired by Charles Darwin.[29][30][31] The critical break from the concept of fixed species in biology began with the theory of evolution by natural selection, which was formulated by Charles Darwin. Partly influenced by An Essay on the Principle of Population by Thomas Robert Malthus, Darwin noted that population growth would lead to a "struggle for existence" where favorable variations could prevail as others perished. Each generation, many offspring fail to survive to an age of reproduction because of limited resources. This could explain the diversity of animals and plants from a common ancestry through the working of natural laws working the same for all types of thing.[32][33][34][35] Darwin was developing his theory of "natural selection" from 1838 onwards until Alfred Russel Wallace sent him a similar theory in 1858. Both men presented their separate papers to the Linnean Society of London.[36] At the end of 1859, Darwin's publication of On the Origin of Species explained natural selection in detail and in a way that led to an increasingly wide acceptance of Darwinian evolution. Thomas Henry Huxley applied Darwin's ideas to humans, using paleontology and comparative anatomy to provide strong evidence that humans and apes shared a common ancestry. Some were disturbed by this since it implied that humans did not have a special place in the universe.[37] Precise mechanisms of reproductive heritability and the origin of new traits remained a mystery. Towards this end, Darwin developed his provisional theory of pangenesis.[38] In 1865 Gregor Mendel reported that traits were inherited in a predictable manner through the independent assortment and segregation of elements (later known as genes). Mendel's laws of inheritance eventually supplanted most of Darwin's pangenesis theory.[39] August Weismann made the important distinction between germ cells (sperm and eggs) and somatic cells of the body, demonstrating that heredity passes through the germ line only. Hugo de Vries connected Darwin's pangenesis theory to Weismann's germ/soma cell distinction and proposed that Darwin's pangenes were concentrated in the cell nucleus and when expressed they could move into the cytoplasm to change the cells structure. De Vries was also one of the researchers who made Mendel's work well-known, believing that Mendelian traits corresponded to the transfer of heritable variations along the germline.[40] To explain how new variants originate, De Vries developed a mutation theory that led to a temporary rift between those who accepted Darwinian evolution and biometricians who allied with de Vries.[25][41][42] At the turn of the 20th century, pioneers in the field of population genetics, such as J.B.S. Haldane, Sewall Wright, and Ronald Fisher, set the foundations of evolution onto a robust statistical philosophy. The false contradiction between Darwin's theory, genetic mutations, and Mendelian inheritance was thus reconciled.[43] I Source of the article published in description is Wikipedia. I am sharing their material. Copyright by original content developers of Wikipedia. Link- http://en.wikipedia.org/wiki/Main_Page
Views: 22231 Shomu's Biology
Theories of evolution demo
Views: 33021 PMT biology
Economic Schools of Thought: Crash Course Economics #14
We talk a lot about Keynesian economics on this show, pretty much because the real world currently runs on Keynesian principles. That said, there are some other economic ideas out there, and today we're going to talk about a few of them. So, if you've been aching to hear about socialism, communism, the Chicago School, or the Austrian School, this episode is for you. Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 709833 CrashCourse
4. Neutral Evolution: Genetic Drift
Principles of Evolution, Ecology and Behavior (EEB 122) Neutral evolution occurs when genes do not experience natural selection because they have no effect on reproductive success. Neutrality arises when mutations in an organism's genotype cause no change in its phenotype, or when changes in the genotype bring about changes in the phenotype that do not affect reproductive success. Because neutral genes do not change in any particular direction over time and simply "drift," thanks in part to the randomness of meiosis, they can be used as a sort of molecular clock to determine common ancestors or places in the phylogenetic tree of life. 00:00 - Chapter 1. Introduction 04:56 - Chapter 2. Genes and Amino Acid Changes Not Reflected in Phenotypes 14:29 - Chapter 3. Neutral Evolution in the History of Life 20:38 - Chapter 4. Mechanisms of Neutral or Random Evolution 35:28 - Chapter 5. The Molecular Clock of Neutral Evolution Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
Views: 37793 YaleCourses
Charles Darwin's Theory of Evolution [in Hindi]
In this lecture, we discuss the theory of evolution. We talk about Charles Darwin and his voyage on the ship HMS Beagle, his theory of evolution, and the evidence and the basic insights that led him to his theory. For more educational videos, visit: www.mayankacademy.com
Views: 77618 mayankacademy
Lecture 1 - Evolution of Management Thought
Lecture series on Concept of Management and Evolution of Management thought by Prof. K.B Akhilesh,Dept. of Management studies, IISc Bangalore. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 149412 nptelhrd
What is Natural Selection?
Support Stated Clearly on Patreon: https://www.patreon.com/statedclearly Special thanks to Rosemary at Bird and Moon Comics for supplying a handful of the critter illustrations: http://www.birdandmoon.com/ Special thanks to AD for the music! http://www.proofavenue.com/ Natural Selection is one of the main concepts found within the theory of evolution. It was discovered by Charles Darwin and Alfred Russel Wallace though Darwin championed the idea in his book "On the Origin of Species". Natural selection can be defined as the process by which random evolutionary changes are selected for by nature in a consistent, orderly, non-random way. When coupled with descent with modification, Natural Selection can cause a population to evolve for fitness within a given environment over multiple generations. Natural Selection is an observable fact. By carefully observing populations of living things with short life cycles you can actually watch it happen. Want to learn more? Check out our notes for this video. Included are links to three examples of natural selection witnessed by researchers. There are many more as well. http://www.statedclearly.com/notes-for-the-natural-selection-video/ This project was funded by contributions from our viewers and from Brain-Tools LLC. Check out Brain Tools' new Alzheimer's treatment here: https://brain-tools.com/ See a Stated Clearly video we did for Brain Tools LLC here: http://youtu.be/rZ_n5X4MMGw
Views: 1370502 Stated Clearly
A Theory of Everything
Bonus Videos & "Chemicals of Reality" Premium Video Available @ http://www.patreon.com/strangemysteries Narrated by Jack Daniel www.jackdanielvo.com Ending trailer by Ben Patrick Johnson Physicists have long sought the discovery of a theory of everything; an all-encompassing framework which unites the known laws of the universe into a single theorem, enabling us to understand every physical phenomenon in the universe. But today we’re talking about the search for a different theory of everything, one which would unite not the sciences, but the collective minds of humanity.It is claimed that a philosophical theory of everything would help us understand ourselves and our race to a greater extent than ever before. When humans are born we are selfish; we are simple-minded, we are basic in every sense of the word. Until now, most attempts to explain human behaviours and the composition of the mind have relied on evolutionary principles. Screen reader support enabled.
Views: 130276 Strange Mysteries
Animal Behavior - CrashCourse Biology #25
Hank and his cat Cameo help teach us about animal behavior and how we can discover why animals do the things they do. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like Crash Course on Facebook: http://www.facebook.com/youtubecrashcourse Follow Crash Course on Twitter: http://www.twitter.com/thecrashcourse References: http://dft.ba/-35Uh crash course, biology, animal species, animal behavior, cat, pets, natural selection, sexual selection, morphology, physiology, structure, function, heritable traits, learned behavior, genetics, adaptive, evolution, stimulus, ethologist, proximate cause, hamster, ultimate cause, reproductive success, offspring, biolography, niko tinbergen, karl von frisch, konrad lorenz, austrian, Nobel prize, imprinting, nazi, foraging, optimal foraging model, alligator snapping turtle, bower bird, vampire bat, altruism, william hamilton, fitness, inclusive fitness, ethology, behavioral ecology, ecology Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 469556 CrashCourse
Intelligent Design 1.7   Darwin Evolution Theory
Natural selection has a simple concept that is being in a state of 'adaptation'. 'Adaptation' is the key principle in creating evolution. It is often misconstrued to be an explanation to the origin of life itself because it is still yet to be proven. Other factors to that principle would be like 'chance' and 'fitness' that makes a lot of difference in various organisms when it comes to the capacities to survive and reproduce in an environment. 'Adaptation' in itself is alterations that can make a difference to any process and along with results - as selection would be acting on heritable variation. Because any modifications from the adaptation becomes an inherent trait that is passed either in genetic forms or memory cell through generations and along with the evolutionary consequences from it. Also in the 'Theory of Evolution' would always require reproducing the entities that form continuity - that may require mutation or variant of itself to satisfy 'adaption' - if the environment requires the 'fitness' factor. To satisfy the condition to happen would need an environment, that is either forced or accidental for it to eventuate, therefore making the right conditions for the three principle forces to occur hence the 'chance'. So, all three factors in Darwinian concept of 'natural selection' base on the 'theory of evolution' are important components to the existence of life and all at the same time would intertwine as it occur. Therefore, what 'natural selection' under the 'theory of evolution' does demonstrate then is the mechanistic process of the existence from adaptations to have evolved in nature and towards the creation of new species and its inherent variants. Cheers
Views: 2471 aussiETau
The Power of Motivation: Crash Course Psychology #17
You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. Feeling motivated? Even if you are, do you know why? The story of Aaron Ralston can tell us a lot about motivation. In this episode of Crash Course Psychology, Hank tells us Ralston's story, as well as 4 theories of motivation and some evolutionary perspectives on motivation. -- Table of Contents Four Theories of Motivation: Evolutionary Perspective 1:38:22 Drive-Reduction 2:45:10 Optimal Arousal 3:38:21 Maslow's Hierarchy of Needs 4:49:04 How Sex, Hunger, and the Need to Belong Motivate us 5:29:02 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1554977 CrashCourse
MIA: Martin Nowak, Evolutionary Dynamics
April 25th, 2018 MIA Meeting: https://youtu.be/PuECCmT1Ioo Martin Nowak Director, Program for Evolutionary Dynamics, Harvard University Evolutionary Dynamics Abstract: Biological evolution describes how populations of individuals change over time. The three fundamental principles of evolution are mutation, selection and cooperation. I will present the mathematical formalism of evolution focussing on stochastic processes. I will discuss amplifiers and suppressors of natural selection, evolutionary game theory and evolutionary graph theory. For more information on the Broad Institute and Models, Inference and Algorithms visit: https://www.broadinstitute.org/mia Copyright Broad Institute, 2018. All rights reserved.
Views: 721 Broad Institute
1. The Nature of Evolution: Selection, Inheritance, and History
Principles of Evolution, Ecology and Behavior (EEB 122) The lecture presents an overview of evolutionary biology and its two major components, microevolution and macroevolution. The idea of evolution goes back before Darwin, although Darwin thought of natural selection. Evolution is driven by natural selection, the correlation between organism traits and reproductive success, as well as random drift. The history of life goes back approximately 3.7 billion years to a common ancestor, and is marked with key events that affect all life. 00:00 - Chapter 1. Introduction 03:22 - Chapter 2. History of Evolutionary Studies 15:59 - Chapter 3. Conditions for Natural Selection 21:25 - Chapter 4. The Power of Selection and Adaptation 27:09 - Chapter 5. Drift 31:10 - Chapter 6. History of Life 39:33 - Chapter 7. Conclusion Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
Views: 146681 YaleCourses
Darwin's Theory of Evolution
Darwin's Theory of Evolution from our friends at http://www.IllustraMedia.com - Unlocking the Mystery of Life. Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification". That is, complex creatures evolve from more simplistic ancestors naturally over time. In a nutshell, as random genetic mutations occur within an organism's genetic code, the beneficial mutations are preserved because they aid survival -- a process known as "natural selection." These beneficial mutations are passed on to the next generation. Over time, beneficial mutations accumulate and the result is an entirely different organism (not just a variation of the original, but an entirely different creature). While Darwin's Theory of Evolution is a relatively young archetype, the evolutionary worldview itself is as old as antiquity. Ancient Greek philosophers such as Anaximander postulated the development of life from non-life and the evolutionary descent of man from animal. Charles Darwin simply brought something new to the old philosophy -- a plausible mechanism called "natural selection." Natural selection acts to preserve and accumulate minor advantageous genetic mutations. Suppose a member of a species developed a functional advantage (it grew wings and learned to fly). Its offspring would inherit that advantage and pass it on to their offspring. The inferior (disadvantaged) members of the same species would gradually die out, leaving only the superior (advantaged) members of the species. Natural selection is the preservation of a functional advantage that enables a species to compete better in the wild. Natural selection is the naturalistic equivalent to domestic breeding. Over the centuries, human breeders have produced dramatic changes in domestic animal populations by selecting individuals to breed. Breeders eliminate undesirable traits gradually over time. Similarly, natural selection eliminates inferior species gradually over time. Darwin's Theory of Evolution is a slow gradual process. Darwin wrote, "Natural selection acts only by taking advantage of slight successive variations; she can never take a great and sudden leap, but must advance by short and sure, though slow steps." [1] Thus, Darwin conceded that, "If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down." [2] 1. Charles Darwin, "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life," 1859, p. 162. 2. Ibid. p. 158. For more on Darwin's Theory of Evolution, please visit http://www.allaboutscience.org/darwins-theory-of-evolution.htm
Views: 92278 Randall Niles
Natural Selection
Discover natural selection as a mechanism of evolution with the Amoeba Sisters. This video also uncovers the relationship of natural selection and antibiotic resistance in bacteria and emphasizes biological fitness. This video has a handout here: http://www.amoebasisters.com/handouts.html Note: This video is focused on natural selection. When we briefly mention evolution as 'change over time', this IS a bit too much of a simplification. We eventually hope to make a video specifically on evolution itself. Support us on Patreon! http://www.patreon.com/amoebasisters Our FREE resources: GIFs: http://www.amoebasisters.com/gifs.html Handouts: http://www.amoebasisters.com/handouts.html Comics: http://www.amoebasisters.com/parameciumparlorcomics Connect with us! Website: http://www.AmoebaSisters.com Twitter: http://www.twitter.com/AmoebaSisters Facebook: http://www.facebook.com/AmoebaSisters Tumblr: http://www.amoebasisters.tumblr.com Pinterest: http://www.pinterest.com/AmoebaSister­s Instagram: https://www.instagram.com/amoebasistersofficial/ Visit our Redbubble store at http://www.amoebasisters.com/store.html The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching science at the high school level. Pinky's teacher certification is in grades 4-8 science and 8-12 composite science (encompassing biology, chemistry, and physics). Amoeba Sisters videos only cover concepts that Pinky is certified to teach, and they focus on her specialty: secondary life science. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines https://www.youtube.com/yt/policyandsafety/communityguidelines.html and YouTube's policy center https://support.google.com/youtube/topic/2676378?hl=en&ref_topic=6151248. We also reserve the right to remove comments with vulgar language. Music is this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog We have YouTube's community contributed subtitles feature on to allow translations for different languages. YouTube automatically credits the different language contributors below (unless the contributor had opted out of being credited). We are thankful for those that contribute different languages. If you have a concern about community contributed contributions, please contact us.
Views: 353602 Amoeba Sisters
Evolution and natural selection | Biomolecules | MCAT | Khan Academy
Learn the fundamental principles about how natural selection can drive the process of evolution. By Ross Firestone. Created by Ross Firestone. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/evolution-population-dynmaics/v/fitness-and-fecundity?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/biomolecules/chromosomal-inheritance/v/extranuclear-inheritance-2?utm_source=YT&utm_medium=Desc&utm_campaign=mcat MCAT on Khan Academy: Go ahead and practice some passage-based questions! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 66433 khanacademymedicine
Tech Kangaroos - Evolution at Work: Ágoston Eiben at TEDxDanubia 2011
Evolution is not just a theory of living creatures shaping process, but a problem solving method as well. In fact the principles of evolution can create much more unique, original and creative solutions than human logic ever did. Just as nature created such a complex and unexpected animal like a kangaroo, with the help of evolutionary problem solving we will be able to design inventions never seen before. "Tech kangaroos" open up brand new perspectives of a future industrial revolution. - - - In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Views: 6178 TEDx Talks
Heredity: Crash Course Biology #9
Hank and his brother John discuss heredity via the gross example of relative ear wax moistness. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook! http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter! http://www.twitter.com/TheCrashCourse This video uses sounds from Freesound.org, a list of which can be found, along with the REFERENCES for this episode, in the Google document here: http://dft.ba/-2dlR tags: crashcourse, science, biology, evolution, genetics, heredity, aristotle, bloodlines, gregor mendel, mendelian genetics, mendelian trait, classical genetics, chromosome, gene, polygenic, pleiotropic, allele, ear wax gene, somatic, diploid, gametes, sperm, egg, haploid, polyploid, dominance, dominant, recessive, heterozygous, homozygous, phenotype, punnett square, reginald c. punnett, sex-linked inheritance, autosome Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2619583 CrashCourse
Friends - Ross and Phoebe argue about Evolution
Season 2, episode 3 - The One Where Heckles Dies Ross the palaeontologist, and Phoebe the new-age free spirit, argue the truth of Evolution. Real scientists will balk at both Ross's strident approach to explaining science to a lay-person and Phoebe's dualist irrationale. Both are very funny characters, though, and it's a good little example of where these sorts of conversations can go off the rails. (Evolution is true, though). Warner Bros. copyright clips fairly used, in part only, to promote the show. No ownership claimed.
Views: 3100136 Glenn Davey
The religious angle to evolutionary theory
The religious angle to evolutionary theory SHOULD CHARLES Darwin's evolutionary theory still be the reigning philosophy of biological science and the general understanding of our origin? Many think not. From a secular point of view, thoughtful students of anthropology and palaeontology have serious doubts about Darwin's 1859 writings on evolution. Further, 80 per cent of Americans today think that Darwin's theory is not the only explanation of our beginnings and that creationism should be taught in that country's public schools. These findings were the result of a year-2000 US poll. There are scientists who remind us that the missing link has never been discovered, and that after nearly a century and a half of natural selection, no one has produced hard evidence of one species transforming into another. Moreover, in his classic 700 page book, Forbidden Archeology, Michael Cremo catalogues discoveries of hundreds of tools, arti- facts and human remains. These findings were situated in strata dated with current scientific methods at over a million years old, indirectly corroborating truths in the Puranas. The Padnia Purana lists the numbers of aquatics, plants, insects, birds, beasts, and humans at 8.4 million. Today's jury of anthropologists believe that two million species have been named to date, and that there are up to 30,000,000 more to be discovered and categorised. If God is accepted as omnipresent, omniscient, all loving and omnipotent, it follows that God can and does intervene in human affairs, hears prayers, has a relationship with us, and creates universes in all their diversity of life forms. Moreover, a series of moral principles such as cleanliness, kindness, courage, compassion, austerity and truth, accompanies any full knowledge of God. Conversely, and significantly, many influential thinkers embraced Darwinism because it made no moral judgments, leaving all developments to chance and random occurrences. Scriptures in most religions confirms that every species was created by God and has existed since time immemorial. Theories based on Darwin, which embrace survival of the fittest and amorality, are intellectually and spiritually restrictive, and cannot co-exist rationally with full knowledge of God. How did we get here, and why do we exist? Darwinian theory cannot retain such a monolithic and quasi-religious status in the scientific market place. The Puranic and Vedic writings detail, our origins and purpose and deserve at least as much attention from scientists worldwide. #laxmi
Views: 378 ISKCON Desire Tree
13. Sexual Selection
Principles of Evolution, Ecology and Behavior (EEB 122) Sexual selection is a component of natural selection in which mating success is traded for survival. Natural selection is not necessarily survival of the fittest, but reproduction of the fittest. Sexual dimorphism is a product of sexual selection. In intersexual selection, a sex chooses a mate. In intrasexual selection, individuals of one sex compete among themselves for access to mates. Often honest, costly signals are used to help the sex that chooses make decisions. 00:00 - Chapter 1. Introduction 06:53 - Chapter 2. Competing and Choosing 13:11 - Chapter 3. Competition with Sexual Dimorphism 27:29 - Chapter 4. Honest, Costly Signaling 35:55 - Chapter 5. Selection through Perception and Polyandry 43:35 - Chapter 6. Summary Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
Views: 35723 YaleCourses
3. Adaptive Evolution: Natural Selection
Principles of Evolution, Ecology and Behavior (EEB 122) Adaptive Evolution is driven by natural selection. Natural selection is not "survival of the fittest," but rather "reproduction of the fittest." Evolution can occur at many different speeds based on the strength of the selection driving it. These types of selection can result in directional, stabilizing, and disruptive outcomes. They can be driven by frequency-dependent selection and sexual selection, in addition to more standard types of selection. 00:00 - Chapter 1. Introduction 02:36 - Chapter 2. Strength of Selection and the Speed of Evolution 24:06 - Chapter 3. Why Evolution Can Be Slow 30:50 - Chapter 4. Types of Selection 42:01 - Chapter 5. Large Scale Selection Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
Views: 41780 YaleCourses
Evolution for Creationists: Where Do We Disagree?
A brief run through the underlying principles behind evolution. I'm interested in our points of departure between creationism and evolutionary theory. For more information about: Natural Selection and Evolution in general: http://evolution.berkeley.edu/ Personalized Genetic Medicine (Pharmacogenomics) http://en.wikipedia.org/wiki/Pharmacogenomics Homeobox genes and bauplans: http://en.wikipedia.org/wiki/HOX_genes Thanks for watching, commenting, "favorite" -ing, and subscribing. I really do appreciate all the support.
Views: 768 conc0rdance
Community Ecology: Feel the Love - Crash Course Ecology #4
Interactions between species are what define ecological communities, and community ecology studies these interactions anywhere they take place. Although interspecies interactions are mostly competitive, competition is pretty dangerous, so a lot of interactions are actually about side-stepping direct competition and instead finding ways to divvy up resources to let species get along. Feel the love? Like CrashCourse! http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse! http://www.twitter.com/TheCrashCourse Table of Contents 1) Competitive Exclusion Principle 2:02 2) Fundamental vs. Realized Niche 3:48 3) Eco-lography / Resource Partitioning 5:25 4) Character Displacement 7:29 5) Mutualism 9:15 6) Commensalism 9:55 References for this episode can be found in the Google document here: http://dft.ba/-2YuA crashcourse, ecology, biology, competition, evolution, survival, habitat, species, interaction, communities, community ecology, resource, animal, limiting factors, competitive exclusion principle, success, paramecium, competitive advantage, extinction, food, prey, diversity, life, adaptation, niche, security, stability, fundamental niche, realized niche, conflict, nature, natural order, robert macarthur, warbler, ecologist, yale, resource partitioning, observation, zone, hunting, foraging, coexist, organism, selection, character displacement, peter grant, rosemary grant, galapagos finches, trait, mutualism, commensalism, mycorrhizae, termite, obligate mutualism, barnacle Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 554426 CrashCourse
Solving Hardy Weinberg Problems
Paul Andersen shows you how to solve simple Hardy-Weinberg problems. He starts with a brief description of a gene pool and shows you how the formula is derived. He then shows you how to solve a couple of sample problems. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License
Views: 828281 Bozeman Science