Crosses between the flour beetles Tribolium castaneum and T. freemani result in large numbers of hybrids that survive but are sterile. This is an example of

Question

Quizplus · Accepted Answer

The fact that the hybrids survive but are sterile suggests that postzygotic reproductive isolation is occurring. This means that there is some sort of genetic incompatibility between the two species that prevents their offspring from producing viable gametes. The other answer choices do not fit the observed outcome of the crosses between the two flour beetle species.

Crosses Between the Flour Beetles Tribolium Castaneum and T