Question

The post-fertilization change involves

• A. Haploid gametic maturation
• B. Introduction of centrioles in the ovum
• C. Inhibition of Meiosis-II
• D. Formation of vitelline membrane

Answer 1

Answer: (A)

Haploid gametic maturation

• After meiosis 1 secondary oocyte initiates meiosis 2.
• The process of meiosis 2 is halted at the metaphase II stage until fertilization occurs.
• Meiosis 2 is completed only if fertilization takes place leading to the formation of a fertilized mature ovum and the second polar body.
• Thus the correct answer is option A.