Natural Selection

Mr. Andersen introduces natural selection, explaining Charles Darwin's role in providing a mechanism for evolution. He defines evolution as changes in the gene pool and discusses the Hardy-Weinberg equilibrium. The video covers natural selection, fitness, and adaptation, using examples like antibiotic resistance in bacteria and the peppered moth. The concept of adaptation is further illustrated with cichlid fish in the Rift Valley. The video concludes with a definition of natural selection as differential reproductive success.

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