Key Reproductive Isolating Mechanisms are Distinguished in That

Question

Key reproductive isolating mechanisms are distinguished in that
A) sexual isolation happens as a result of mating selection, and postzygotic isolation happens when offspring cannot interbreed.
B) speciation isolates two or more species in the same area, while extinction isolates species that leave the area.
C) geographic isolation prevents two species from breeding, while prezygotic isolation is from biological differences in the species.
D) prezygotic isolation acts upon parents of two species, and postzygotic isolation acts on the offspring from two species.
E) postzygotic isolation acts upon parents of two species, and prezygotic isolation acts on the offspring from two species.

Accepted Answer

Key reproductive isolating mechanisms are classified into two main types: prezygotic and postzygotic. Prezygotic isolation involves differences in the traits or behaviors of two species that prevent them from mating successfully, while postzygotic isolation involves the inability of offspring from two species to survive or reproduce. Thus, choice D is correct because prezygotic isolation acts upon parents of two species, while postzygotic isolation acts on the offspring from two species.