Question

51. Which of the following is a post-zygotic-isolating mechanism in speciation ?
(A) Behavioural isolation
(B) Seasonal isolation
(C) Fertilization failure
(D) Hybrid sterility​

Answer 1

Answer:

Hybrid sterility

Explanation:

Formation of hybrid or a progeny is a post zygotic event. Post zygotic isolation mechanism includes formation of sterile offsprings, hybrid inviability and hybrid breakdown .

So, the correct answer is 'Hybrid sterility'