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Two Species of Frogs Belonging to the Same Genus Occasionally

Question 4

Multiple Choice

Two species of frogs belonging to the same genus occasionally mate,but the offspring fail to develop and hatch.What is the mechanism for keeping the two frog species separate?


A) the postzygotic barrier,reduced hybrid viability
B) the postzygotic barrier,hybrid breakdown
C) the prezygotic barrier,reduced hybrid fertility
D) the prezygotic barrier,gametic isolation

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