Theoretically, the production of sterile mules by interbreeding between female horses (mares)and male donkeys (jacks)should
A) result in the extinction of one of the two parental species.
B) cause convergent evolution.
C) strengthen postzygotic barriers between horses and donkeys.
D) weaken the intrinsic reproductive barriers between horses and donkeys.
E) eventually result in the formation of a single species from the two parental species.

Question

Quizplus · Accepted Answer

The production of sterile mules by interbreeding between female horses and male donkeys would not result in the extinction of one of the two parental species or cause convergent evolution. It would, however, strengthen postzygotic barriers between horses and donkeys, as the offspring of such interbreeding are sterile and cannot produce viable offspring themselves. This would make it less likely for further interbreeding to occur between horses and donkeys in the future, strengthening the reproductive isolation of the two species. Interbreeding may also weaken the intrinsic reproductive barriers between horses and donkeys, but this would not be the primary outcome. It would not result in the formation of a single species from the two parental species, as mules are sterile and cannot reproduce.

Theoretically, the Production of Sterile Mules by Interbreeding Between Female