Genetic drift operates in

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(A) Genetic drift refers to the random changes in allele frequencies within a population that occur due to chance events rather than natural selection

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small isolated population

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(A) Genetic drift refers to the random changes in allele frequencies within a population that occur due to chance events rather than natural selection. While genetic drift can occur in populations of any size,its effects are most significant and pronounced in small,isolated populations. In such small groups,chance events can lead to the rapid loss or fixation of alleles,which significantly alters the genetic makeup of the population over time. This phenomenon is also known as the $Sewall \ Wright$ effect.

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