Two Species of Frogs Belonging to the Same Genus Occasionally

question 46

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 called hybrid inviability
• B) the postzygotic barrier called hybrid breakdown
• C) the prezygotic barrier called hybrid sterility
• D) gametic isolation

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