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The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is
A
Spermatogonia – spermatid – spermatocyte – sperms
B
Spermatocyte – spermatogonia – spermatid – sperms
C
Spermatogonia – spermatocyte – spermatid – sperms
D
Spermatid – spermatocyte – spermatogonia – sperms
Detailed Solution
Spermatogonia (2n) on the inside wall of the seminiferous tubules multiply by mitosis.
Some spermatogonia grow into primary spermatocytes (2n), which undergo the first meiotic division to form two haploid secondary spermatocytes.
The secondary spermatocytes undergo the second meiotic division to form four haploid spermatids.
The spermatids are transformed into spermatozoa (sperms) by the process of spermiogenesis.
Correct sequence: spermatogonia – spermatocyte – spermatid – sperms
Some spermatogonia grow into primary spermatocytes (2n), which undergo the first meiotic division to form two haploid secondary spermatocytes.
The secondary spermatocytes undergo the second meiotic division to form four haploid spermatids.
The spermatids are transformed into spermatozoa (sperms) by the process of spermiogenesis.
Correct sequence: spermatogonia – spermatocyte – spermatid – sperms