What is the phenomenon called when variation | 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. Unlike natural selection,which is a non-random process,genetic drift occurs by chance. It is particularly significant in small populations,where random events can lead to the loss of certain alleles or the fixation of others,regardless of their adaptive value.

What is the phenomenon called when variation in gene frequency in a population occurs by chance rather than by natural selection?

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