What would likely result from continued gene flow between two populations?

Continued gene flow between two populations leads to the mixing of their genetic materials, which can result in the homogenization of alleles. This means that the genetic differences between the populations are reduced as individuals from one population mate with individuals from the other. As alleles combine, the distinction in genetic traits that may have evolved in isolation becomes blurred, and the populations become more genetically similar over time.

This process can counteract speciation, which typically requires some barrier to gene flow that allows populations to diverge genetically. Therefore, rather than increasing genetic differences or leading to speciation, the continued mixing of alleles from different populations smoothens out genetic variation.