Whether we’re talking about tigers, trees, or tarantulas, evolution happens at the level of the population. In this episode of Crash Course Biology, we’ll find out how natural selection, gene flow, genetic drift, and other processes drive changes in populations. We’ll learn about the Hardy-Weinberg equation, how your alleles make you uniquely you, and how some tigers changed their stripes.
When Black Bears Are White 00:00
Genes & Alleles 1:37
Natural Selection 3:33
Genetic Drift 4:26
Gene Flow 8:22
The Hardy-Weinberg Equation 10:02
Review & Credits 11:14
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