Question

How many days does it take for spermatogenesis to take place ?

• A. $40$ to $65$ days
• B. $60$ to $75$ days
• C. $70$ to $95$ days
• D. $50$ to $65$ days

Answer 1

Answer: (B)

The process by which sperms are produced is called spermatogenesis. A cycle of spermatogenesis involves the division of primitive spermatogonial stem cells to produce spermatogoina. These divide by mitosis to produce spermatocytes, which divide by meiosis to produce four haploid spermatids which transform into mature sperms by the process of spermiogenesis. The whole process takes $70-80$ days. In humans, spermatocyte maturation takes $23.5$ days, spermiogenesis takes $21.6$ days and the total estimated time for spermatogenesis is $74$ days.