Question

Geographic isolation causes a reduction in ____________, eventually resulting in dissimilarities in a once-similar population of organisms. gene flow genetic mutation

Answer 1

Gene Flow

Step-by-step explanation:

I got it on USAtestprep :D

Answer 2

Geographic isolation causes a reduction in speciation, eventually resulting in dissimilarities in a once-similar population of organisms. Gene Flow genetic mutation.

Step-by-step explanation:

What was once a continuous population, is now divided into two or more smaller populations due to Geographic isolation of organisms.