Which of the following statements are true about Post-mating isolating mechanisms?
Post-mating isolating mechanism will have hybrid inviability
The fertilization does not occur in post-mating isolating mechanism
Copulation does not occur in post-mating isolating mechanism
Post-mating isolating mechanism will have zygotic immortality
I and III
I and II
II and IV
III and IV
Statement I and II are correct
Post-mating isolating mechanisms will have hybrid inviability and gametic incompatibility. A postzygotic barrier that limits a hybrid's ability to develop into a strong and healthy adult is known as hybrid inviability. The transfer of sperm that takes place without fertilization is known as gametic incompatibility.
Statement III and IV incorrect
Copulation occurs at the mechanical isolation that comes under a premating isolating mechanism. Post-mating isolating mechanism does not have zygotic immortality.
Option 2 is the correct answe.