What is gene flow?

A. when a population splits in two

B. a mutation becoming more common

C. two populations transferring genes

D. Selection for extreme traits

Answer: C) Two populations transferring genes.

Explanation:

Gene Flow: In population genetics, gene flow is the transfer of genetic variation from one population to another. If the rate of gene flow is high enough, then two populations are considered to have equivalent allele frequencies and therefore effectively be a single population.