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Topic: Gametogenesis: spermatogenesis and oogenesis· Reproduction

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 t…

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 and B are true

2. A and C are true

3. B and D are true

4. B and C are true

1 answer

Best answer

Answer: 1. A and B are true

Key idea: Compare timing of meiosis in the two sexes and the role of hormones.

  • A is true. In females meiosis I begins in the fetus (oogonia become primary oocytes and arrest at prophase I). In males it begins only at puberty.
  • B is true. In males the two meiotic divisions follow quickly. In females meiosis II is completed only after fertilisation, years after meiosis I.
  • C is false. The first polar body forms when the primary oocyte completes meiosis I, giving the secondary oocyte; it is not linked to forming the primary oocyte.
  • D is false. The LH surge causes ovulation. Menstruation follows the fall of progesterone.

Only A and B are true: option 1.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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