Question

evolution is change in a population over time and includes the gene pools of that population. how does biogeographic isolation allow for the change of gene pools over time?

• biogeographic isolation affects the random changes that take place within gene pools.
• biogeographic isolation causes changes in gene pools that result from populations being separated.
• biogeographic isolation determines who will win competition for mates.
• biogeographic isolation determines the time that populations will breed.

Explanation:

Biogeographic isolation splits a single population into separate groups that cannot interbreed. Over time, each separated group accumulates unique genetic changes (from mutation, genetic drift, natural selection) independent of the other group, altering their respective gene pools. The other options are incorrect: it does not directly affect random gene pool changes (genetic drift is separate), nor does it determine mate competition winners or breeding timing (those are related to behavioral/temporal isolation).

Answer:

Biogeographic isolation causes changes in gene pools that result from populations being separated.