Why evolution happens to populations, not individuals
In short: While we often think of evolution as a slow change in species, it is actually driven by shifts in allele frequencies within populations through processes like natural selection and genetic drift.
This video explores the mechanics of microevolution, examining how gene flow and genetic drift influence biological change. It introduces the Hardy-Weinberg equation as a tool to understand these shifts and uses examples—such as the changing stripes of tigers and the white coats of certain black bears—to illustrate how alleles shape the unique characteristics of a population over time.
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Sources
- Summary by Intellect · source: Microevolution: What's An Allele Got to Do With It?: Crash Course Biology #12
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