Question

In humans, the secondary oocyte completes meiotic division when:

• A. it gets implanted in the uterine endometrium.
• B. it is released from the matured Graafian follicle.
• C. it is penetrated by the sperm cell.
• D. acrosomal enzymes break down the zona pellucida.

Hint:

The completion of the secondary oocyte’s meiotic division occurs during fertilization when the sperm enters the egg.

Answer 1

The Correct Option is C

In humans, the secondary oocyte completes its second meiotic division only after it is penetrated by a sperm cell during fertilization. This step is critical for the oocyte to proceed to form a mature ovum.