Which Best Describes Biogeographic Isolation?

A. It cannot lead to evolution.

B. It is a mechanism for evolution.

C. It always leads to the formation of new species.

D. It occurs only through geographic forces.

Correct Answer: B. It is a mechanism for evolution.

Explanation:

The physical separation of populations of the same species by geographical barriers (such as mountains, rivers, or oceans) is known as biogeographic isolation, and it is a crucial process (mechanism) in evolutionary biology.

Because of this division, there is no gene flow between the populations, allowing them to develop genetic variation over time and adapt to various environmental stresses.

New species may eventually emerge from this process, called allopatric speciation.

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