Question

a change in allele frequencies in a population caused when new individuals move into the population. gene flow gene pool mutation genetic drift

Explanation:

• Gene flow is defined as the transfer of genetic variation between populations via the movement of individuals (or their gametes) into a new population, which directly alters the allele frequencies of the recipient population.
• A gene pool refers to all the genetic material present in a population, not a change in allele frequencies due to migration.
• Mutation is a change in an organism's DNA sequence, not caused by new individuals moving into a population.
• Genetic drift is random changes in allele frequencies due to chance events, not migration of new individuals.

Answer:

A. Gene flow