_____________ occurs when a random event alters the allele frequencies in a population such that subsequent generations have allele frequencies different from their parental generations.

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Genetic drift is a mechanism of evolution that occurs when random events cause changes in the frequencies of alleles in a population. Unlike natural selection, which is a non-random process, genetic drift affects the genetic makeup of the population by chance, leading to changes in allele frequencies across generations without regard to the alleles' influence on fitness and survival.

_____________ Occurs When a Random Event Alters the Allele Frequencies