Male frogs give calls that attract female frogs to approach and mate. Researcher

Question

Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. If reinforcement of postzygotic isolation is occurring, what would you expect if you compare the calls of the two species in zones of sympatry versus zones of allopatry?

A) Calls would be about the same in both areas.

B) Calls would be more similar in areas of sympatry. C) Calls would be more different in areas of sympatry. D) There is not enough information to decide what is happening.

Explanation / Answer

ANSWER B

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