
Hank guides us through the process of natural selection, the key mechanism of evolution. Like CrashCourse on Facebook: www.facebook.com Follow CrashCourse on Twitter: www.twitter.com 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: dft.ba 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
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