Question

question 18
1 pts
nature.
__________ isolating mechanisms include improper development of hybrids and failure of hybrids to become established in
o prezygotic
o mechanical
o behavioral
o postzygotic

Explanation:

Isolating mechanisms are of two types: pre - zygotic and post - zygotic. Pre - zygotic mechanisms prevent fertilization, while post - zygotic mechanisms act after fertilization. The description in the question about improper development of hybrids and failure of hybrids to become established refers to post - zygotic isolation. Behavioral and mechanical isolation are pre - zygotic mechanisms.

Answer:

postzygotic