Question

Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?

1. It results in the formation of haploid gametes
2. Differentiation of gamete occurs after the completion of meiosis
3. Meiosis occurs continuously in a mitotically dividing stem cell population
4. It is controlled by the Luteinizing hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary
5. It is initiated at puberty

Choose the most appropriate answer from the options given below:

• A. (c) and (e) only
• B. (b) and (c) only
• C. (b), (d) and (e) only
• D. (b), (c) and (e) only

Answer 1

Answer: (A)

(c) and (e) only

Answer 2

Oogenesis begins at the fetal stages and not at puberty.
- Meiosis does not occur continuously in case of oogenesis since it is a discontinuous process in women. It starts dividing mitotically at the fetal stages to form a diploid primary oocyte.
This primary oocyte enters meiosis but remains arrested at prophase I of meiosis up until puberty, after which it resumes division and completes Meiosis I. Meiosis II is completed only after fertilization.