A New River Cuts Through the Range of a Species

question 188

Multiple Choice

A new river cuts through the range of a species of terrestrial isopods, effectively ending gene flow between populations on either side and resulting in speciation.The process at work in this situation is

• A) dispersal.
• B) vicariance.
• C) biogeography.
• D) continental drift.
• E) interchange of species.

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