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?

Question

Quizplus · Accepted Answer

The fact that the offspring fail to develop and hatch indicates that there is a postzygotic barrier in place preventing successful hybridization. In this case, the postzygotic barrier is specifically called hybrid inviability. This mechanism helps to keep the two frog species separate by preventing the creation of viable offspring.

Two Species of Frogs Belonging to the Same Genus Occasionally