Genetic drift is primarily associated with relatively small breeding populations.

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Genetic drift is the random fluctuation of allele frequencies in a population caused by chance events, such as founder effects, genetic bottlenecks, and random sampling of gametes. It is more likely to occur in small populations where chance events can have a greater impact on allele frequencies. In larger populations, the effects of genetic drift are generally less significant.

Genetic Drift Is Primarily Associated with Relatively Small Breeding Populations