When a change in the gene frequency of popula | vedclass

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(B) Genetic drift is defined as the change in the frequency of an existing gene variant (allele) in a population due to random sampling of organisms.

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Genetic drift

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(B) Genetic drift is defined as the change in the frequency of an existing gene variant (allele) in a population due to random sampling of organisms. It occurs by chance and is more pronounced in small populations. Unlike natural selection,which is a non-random process,genetic drift is a stochastic (random) process. Therefore,the correct answer is Genetic drift.

When a change in the gene frequency of population occurs by chance,it is called . . . . . .

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