Question

How does gene migration or gene flow affect allele frequencies?

Options

• It only affects recessive allele frequencies

• It maintains allele frequencies in all populations

• It prevents the formation of new alleles

• It changes allele frequencies in both old and new populations

Answer 1

Gene migration or gene flow changes allele frequencies in both the original population (where individuals emigrate) and the new population (where individuals immigrate). The exchange of alleles between populations alters the genetic composition of both populations.