What does the biological species concept use as the primary criterion for determining species boundaries?
A) geographic isolation
B) niche differences
C) gene flow
D) morphological similarity

Question

Quizplus · Accepted Answer

The biological species concept uses gene flow as the primary criterion for determining species boundaries. This concept defines a species as a group of organisms that can interbreed and produce viable, fertile offspring, but are reproductively isolated from other such groups. Thus, gene flow serves as the criteria for determining whether two groups of organisms belong to the same species.

What Does the Biological Species Concept Use as the Primary