Which of the following reproductive isolating mechanisms acts after fertilisation?
A) Mechanical.
B) Hybrid breakdown.
C) Temporal.
D) Ethological.
E) Ecological.

Question

Quizplus · Accepted Answer

Hybrid breakdown is a postzygotic barrier where hybrid offspring of two different species may be fertile but when they mate, the next generation is often sterile or inviable. This occurs after fertilization, distinguishing it from prezygotic barriers like mechanical, temporal, ethological, and ecological isolation mechanisms.

Which of the Following Reproductive Isolating Mechanisms Acts After Fertilisation