What is genetic drift a change in?

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(C) 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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Gene frequency from one generation to the next

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(C) 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 when chance events cause allele frequencies to fluctuate unpredictably from one generation to the next. Unlike natural selection,which is adaptive,genetic drift is a stochastic (random) process that can lead to the loss of alleles or the fixation of others,especially in small populations.

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