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Natural Selection - Crash Course Biology #14
Natural Selection - Crash Course Biology #14
Description :Hank guides us through the process of natural selection, the key mechanism of evolution. Crash Course Biology is now available on DVD! Like CrashCourse on Facebook: Follow CrashCourse on Twitter: 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: This video uses the following sounds from "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:
Duration : 12m 44s
Uploader : CrashCourse
Added On: : 2012 30
Views : 1584754
Likes : 12078
Dislikes: : 366

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