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Two species of crickets have partially overlapping ranges.Hybrids are never found in the areas where the species meet.Individuals taken either from areas where they meet or areas where they do not meet will rarely mate in the lab because the females reject the songs sung by males of the other species.Of the few hybrids that are produced in lab crosses,all have low viability.
-The two cricket species exhibit _______ isolation.
A) mechanical
B) behavioral
C) habitat
D) gametic
E) temporal

Question

Quizplus · Accepted Answer

The fact that hybrids are never found in areas where the two species meet suggests that they have a behavioral isolation mechanism. Additionally, the fact that individuals taken from different areas rarely mate in the lab because of female rejection of songs sung by males of the other species further supports behavioral isolation. The other types of isolation (mechanical, habitat, gametic, and temporal) are not mentioned or supported by the given information.

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