Question

During spermatogenesis, second meiotic division occurs during

• A. Spermatogonia A $\to$ Spermatogonia B
• B. Primary spermatocyte $\to$ Secondary spermatocyte
• C. Spermatogonia B $\to$ Primary spermatocyte
• D. Secondary spermatocyte $\to$ Spermatid

Answer 1

Answer: (D)

During spermatogenesis, some spermatogonia (termed as primary spermatocytes) periodically undergo meiosis. A primary spermatocyte completes meiosis-I (reduction division) and gives rise to 2 equal-sized cells called secondary spermatocytes (n = 23). Both secondary spermatocytes undergo meiosis-II (equational division) to produce 2 equal spermatids (n) each.