Two species of tree frogs that live sympatrically in the northeastern United States differ in ploidy:
Hyla chrysocelis is diploid,and Hyla versicolor is tetraploid.The frogs are identical in appearance;but their mating calls,which females use to find mates,differ.Which difference most likely evolved first?
A)polyploidy
B)difference in mating calls
C)Polyploidy and different mating calls must have evolved at the same time.

Question

Quizplus · Accepted Answer

Polyploidy likely evolved first, as it is a genetic change that can lead to reproductive isolation, which would then drive the evolution of different mating calls to prevent interbreeding.

Two Species of Tree Frogs That Live Sympatrically in the Northeastern