Question

How does geographic isolation affect a population's gene pool?

OIt increases the rate of mutation in the gene pool.
OIt prevents gene flow between other populations.
OIt causes natural selection to remove harmful genes.
It increases the rate of gene flow between populations.

Answer 1

Answer: geographical isolation stops gene flow between subpopulations.

Step-by-step explanation:

Answer 2

Answer: It prevents gene flow between other populations.

Explanation: I took the test and it was right :)