Question

$2n=16$ in a primary spermatocyte, which is in metaphase of first meiotic division: What shall be the total number of chromatids in each of the secondary spermatocyte?

• A. 32
• B. 8
• C. 16
• D. 24

Answer 1

Answer: (C)

16

Answer 2

In spermatogenesis, primary spermatocyte undergoes meiosis-I and as a result of which two haploid secondary spermatocytes are formed. Thus, for the given case secondary spermatocyte possesses 8 chromosomes, ie, $n=8$ and 16 chromatids because each chromosome divides along its length into two chromatids.