When Both Drift and Selection Are Acting on a Locus

question 27

Multiple Choice

When both drift and selection are acting on a locus (alleles are not neutral and the population size is finite) , which of the following can occur?

• A) Natural selection can increase the effect of genetic drift.
• B) Neutral mutations are subject to natural selection.
• C) Genetic drift can result in heterozygous advantage.
• D) Beneficial mutations can be lost from the population.

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