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When animals migrate from one area to another and join another population, this results in gene flow. Gene flow is the transfer of genetic material from one population to another, often through the movement of individuals. This can lead to increased genetic diversity in the receiving population and can help prevent genetic drift, which is the random change in allele frequencies due to chance events.
Gene flow can also play a role in maintaining species cohesion and preventing speciation by ensuring that populations have the opportunity to exchange genetic material. By allowing for the movement of genes between populations, gene flow can counteract the effects of genetic isolation and promote genetic mixing.
In summary, when animals migrate and join another population, it facilitates gene flow, which can impact genetic diversity, population cohesion, and the evolutionary trajectory of a species.
