Question

Arrange the following events of spermatogenesis.

I. The spermatogonia gives rise to 4 Primary spermatocytes (2n)

ii. The spermatogonia divides mitotically to maintain the germ cells (2n)

Iii. Spermiogenesis

Iv. Each primary spermatocyte gives rise to 2 secondary spermatocytes(n)

• A. iii,ii,i,iv
• B. ii,i,iv,iii
• C. iii,i,ii,iv
• D. ii,iii,i,iv

Answer 1

The correct option is B

ii,i,iv,iii

The seminiferous tubules have diploid germ cells called spermatogonia which constitute the germinal epithelium. These spermatogonia divide mitotically to maintain the germ cell layer and also undergo different stages of differentiation to form spermatozoa. The spermatogonia divides mitotically to produce 4 primary spermatocytes. Then each of the 4 primary spermatocytes which are still diploid undergo meiosis to produce 2 haploid secondary spermatocytes.