Which reproductive isolation mechanism explains why a large dog, such as a Newfoundland, would not normally mate with a small dog, such as a Chihuahua?
A) Sexual isolation
B) Gametic isolation
C) Temporal isolation
D) Behavioral isolation
E) Mechanical isolation

Question

Quizplus · Accepted Answer

Mechanical isolation occurs when differences in size or structure of the reproductive organs prevent mating or fertilization between species. In the case of a large dog like a Newfoundland and a small dog like a Chihuahua, their significant size difference can physically prevent successful mating, thus serving as a form of mechanical isolation.

Which Reproductive Isolation Mechanism Explains Why a Large Dog, Such