Two populations of flowers are separated by a mountain range and would not be capable of interbreeding.This is an example of:

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Geographical isolation refers to a physical barrier, such as a mountain range, that separates populations and prevents gene flow, leading to divergence and potentially speciation. The other options, behavioral isolation, mechanical isolation, and ecological isolation, refer to different types of reproductive barriers that can also lead to speciation, but they do not involve a physical barrier like geographical isolation.

Two Populations of Flowers Are Separated by a Mountain Range