Question

which of the following could result in speciation from biogeographic isolation?
○ the isolation of two populations of the same species
○ the isolation of two individuals of the same species
○ the isolation of two populations of different species
○ the isolation of two individuals of different species

Explanation:

Speciation via biogeographic isolation occurs when a population (not individuals) of the same species is isolated geographically. Over time, genetic differences accumulate, leading to new species. Isolating two individuals (not enough genetic diversity) or different species (they're already distinct) doesn't lead to speciation from the same - species starting point. So the isolation of two populations of the same species can result in speciation.

Answer:

A. the isolation of two populations of the same species