Geographic isolation can cause an increase in genetic drift is true.
What is genetic drift?
Genetic drift is a change in allele frequencies in a population from generation to generation that occurs due to chance events. To be more exact, genetic drift is changed due to "sampling error" in selecting the alleles for the next generation from the gene pool of the current generation. Although genetic drift happens in populations of all sizes, its effects tend to be stronger in small populations.
What is speciation?
Speciation is how a new kind of plant or animal species is created. Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics.
What is gene flow?
Gene flow is the movement of genes into or out of a population. Such movement may be due to the migration of individual organisms that reproduce in their new populations, or to the movement of gametes.
What is natural selction?
Natural selection occurs when individuals with certain genotypes are more likely than individuals with other genotypes to survive and reproduce, and thus pass on their alleles to the next generation.
Learn more about the natural selection here:https://brainly.com/question/23929271
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