Question

which best describes biogeographic isolation?
○ it always leads to the formation of new species.
○ it cannot lead to evolution.
○ it is a mechanism for evolution.
○ it occurs only through geographic forces.

Explanation:

Biogeographic isolation is a process where populations are separated by geographic or other barriers, preventing gene flow. This separation can lead to genetic divergence over time, which is a key mechanism driving evolution. It does not always result in new species (other factors are required), it can lead to evolution, and it can occur via non-geographic barriers (like ecological differences) too.

Answer:

C. It is a mechanism for evolution.