What term refers to the migration of alleles from one population to another?

The term that refers to the migration of alleles from one population to another is gene flow. This process is essential in population genetics because it introduces new genetic material into a population, which can increase genetic diversity and alter allele frequencies. When individuals from one population interbreed with individuals from another population, they facilitate the movement of alleles, which can lead to changes in the genetic composition of both populations involved. Gene flow can counteract the effects of genetic drift and natural selection by allowing beneficial alleles to spread through populations, thereby enhancing adaptability and survival. Understanding gene flow is crucial for studying evolutionary processes, conservation biology, and the maintenance of biodiversity.