What is an outcome of gene flow?

The transfer of alleles or genes from one population to another is a key outcome of gene flow. This process occurs when individuals from one population migrate to another population and interbreed, introducing new genetic material into the recipient population. Gene flow plays a significant role in maintaining genetic diversity within populations by allowing for the mixing of genetic variations, which can influence traits and enhance the adaptability of species over time.

In contrast, options related to the isolation of species and the creation of new species through mutation focus on more specific evolutionary processes that do not directly pertain to gene flow. Additionally, the reduction of genetic diversity within a population implies a loss of genetic variation, which is usually a consequence of inbreeding or population bottlenecks rather than the introduction of new alleles through gene flow.