Question

In a healthy male, how many sperm cells would be expected to be formed from (a) 400 primary spermatocytes? (b) 400 secondary spermatocytes?

1) a) 800, b) 800
2) a) 1600, b) 1600
3) a) 1600, b) 800
4) a) 400, b) 400
5) a) 100, b) 800

Answer 1

In a healthy male, 400 primary spermatocytes would form 800 haploid spermatids.

Step-by-step explanation:

The process of spermatogenesis begins with mitosis of the diploid spermatogonia, which results in the formation of two diploid primary spermatocytes. Each primary spermatocyte then undergoes meiosis I to produce two haploid secondary spermatocytes. Finally, each secondary spermatocyte undergoes meiosis II to produce a total of four haploid spermatids. So, if there are 400 primary spermatocytes, there would be a total of 800 haploid spermatids.