Natural Selection for Traits That Keep Distinct Populations from Reproducing

Multiple Choice

Natural selection for traits that keep distinct populations from reproducing with each other is called reinforcement.When is reinforcement beneficial?

A) when the environment is changing
B) when hybrids have lower fitness than either parent population
C) when prezygotic isolating mechanisms are in place
D) when gene flow is low
E) Reinforcement is beneficial under all of the above conditions.