Darwin and Natural Selection: Crash Course History of Science #22

Darwin and Natural Selection: Crash Course History of Science #22

"Survival of the Fittest" sounds like a great WWE show but today we're talking about that phrase as it relates to Charles Darwin and Alfred Wallace. Darwin and Wallace are at the heart of understanding evolution and natural selection. Today, Hank talks about their wonderful (if not seasick inducing) trips around the world. *** 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: Mark Brouwer, Erika & Alexa Saur Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Eric Kitchen, Ian Dundore, Chris Peters -- 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/

What is Darwin’s Theory of Evolution?

What is Darwin’s Theory of Evolution?

The theory of evolution by natural selection was first formulated in Darwin’s book “On the Origin of Species” in 1859. It describes how organisms change over time as a result of changes in heritable physical or behavioral traits.

Darwin's Theory Of Evolution - Discovery History Science Documentary

Darwin's Theory Of Evolution - Discovery History Science Documentary

Darwin's Theory Of Evolution - Discovery History Science Documentary Darwin's Theory Of Evolution - Discovery History Science Documentary

DARWIN'S THEORIES

DARWIN'S THEORIES

Origin of Species video. Animation video explaining in simple language and through powerful visual communication, the key concepts linked to Darwin`s most famous theory: the Origin of Species through Natural Selection. Encourages students to formulate questions and do research on their own. Content related transversally to concepts posed in other units.

The Failure of Darwin's Theory

The Failure of Darwin's Theory

Dr. Stephen Meyer and Dr. John Ankerberg explore how DNA causes problems for Darwin's theory of evolution. (SM15-1-4)

Natural Selection - Crash Course Biology #14

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

Darwin and Theory of Evolution Documentary

Darwin and Theory of Evolution Documentary

Please order ebook/audiobook of this video to support our channel https://www.smashwords.com/books/view/677858, https://www.amazon.co.uk/Darwin-Theory-Evolution/dp/B01L28H47U/ref=sr_1_1?ie=UTF8&qid=1538740674&sr=1-1&keywords=Darwin+introbooks or https://www.audible.com/pd/Darwin-and-the-Theory-of-Evolution-Audiobook/B01L28HLCI?qid=1538740679&sr=sr_1_1&ref=a_search_c3_lProduct_1_1&pf_rd_p=e81b7c27-6880-467a-b5a7-13cef5d729fe&pf_rd_r=TR7VZER5YZMQ7M6TR55E& Charles Darwin in the middle of the 19th century had verbalized a scientific theory of evolution by natural selection; his work became famous through this published book ‘On the Origin of Species’(1859). Watch this film to get a deep understanding of his theory.

Charles Darwin - The Theory Of Natural Selection

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.

What is Evolution?

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.

Natural Selection (Darwin's theory vs Lamarck's theory)

Natural Selection (Darwin's theory vs Lamarck's theory)

http://www.sciencetutorial4u.com This video covers Charles Darwin's theory of Natural Selection and Lamarck's theory for students studying for GCSE Science Biology. Refer to these timings to cover: 1. Darwin's theory 00:16 2. Evolution 01:25 3. Causes of Natural Selection 01:50 4. Why was Darwin's theory rejected 03:17 5. Lamarck's theory 04:25 Please like, subscribe and share, THANK YOU so much: https://youtu.be/bPuXtCs4O3Q 1. Darwin's theory 00:16 Charles Darwin's theory states that "only the organisms which are better adapted to the environment can survive and pass their genes to the next generation". Darwin's theory can also be referred as "survival of the fittest", which means only the highly adapted organisms to their surroundings will be able to exist and if not they will be extinct. 2. Evolution 01:25 Evolution states that many complex organisms have evolved from one simple species. Evolution happens due to natural selection. 3. Causes of Natural Selection 01:50 Natural selection happens due to 2 reasons: 1st REASON: If environmental conditions change, then the organisms have to adapt to the new surrounding and this is achieved by developing new survival characteristics. Therefore, environmental changes cause the organisms to evolve. 2nd REASON: It is due to MUTATION. Mutation is change in DNA. if DNA changes , then a new characteristics will be formed which can be beneficial, harmful or neutral. if such mutation increases the chance of survival then it is a beneficial mutation. 4. Why was Darwin's Theory rejected? 03:17 It is due to 3 reasons: - His theory was against religious beliefs. - Charles Darwin could not explain the sudden appearance of new characteristics. He could not explain mutation as DNA were not discovered back then. - There were other scientists coming up with different theories and one of them was Lamarck. 5. Lamarck's Theory 04:25 Lamarck's theory states that "only the characteristics which are highly used will get developed and be passed on to the new next generation". Lamarck's theory was rejected and eventually Darwin's theory is now accepted. MUSICS: "Son of a Rocket" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ "Cut and Run" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

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