Consider the following A. The reductive division for the human female gametogenesis starts earlier than that of the male gametoge…

Question

Consider the following:

A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis. B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females. C. The first polar body is associated with the formation of the primary oocyte. D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.

Choose the correct answer from the options given below:

1. A. A and B are true (Correct answer)
2. B. A and C are true
3. C. B and D are true
4. D. B and C are true

Correct Answer

Option A — A and B are true

Detailed Solution & Explanation

The correct answer is A and B are true.

Key Points

• A true: in females, meiosis (reductive division) begins during foetal life — much earlier than in males.
• B true: in males the two meiotic divisions occur in quick succession, whereas in females meiosis-II is completed only after fertilisation (a very long gap).
• C false: the first polar body is associated with the secondary oocyte (not primary). D false: the LH surge causes ovulation; menstrual bleeding is due to a fall in progesterone.