Question

consider the impacts on the bird population and its gene pool. ______ is responsible for gene flow and an important mechanism for genetic variation. a emigration only b immigration only c neither emigration or immigration d both emigration and immigration

Explanation:

Gene flow is the transfer of genetic material from one population to another. Immigration (individuals coming into a population) and emigration (individuals leaving a population) both involve movement of individuals between populations. When individuals immigrate or emigrate, they bring or take away their genes, contributing to gene flow and genetic variation. So both processes are responsible.

Answer:

D. both emigration and immigration