Although each of the following has a better chance of influencing gene frequencies in small populations than in large populations, which one most consistently requires a small population as a precondition for its occurrence?

Although each of the following has a better chance of influencing gene frequencies in small populations than in large populations, which one most consistently requires a small population as a precondition for its occurrence? 





A) mutation
B) nonrandom mating
C) genetic drift
D) natural selection
E) gene flow




Answer: C


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