Q.

Read the following 

A. Spermatogonia 

B. Primary spermatocytes 

C. Secondary spermatocytes 

D. Spermatids 

E. Spermatozoa 

Identify the cells that have both X and Y in their karyotypes

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a

A, B and C

b

A and B only

c

C, D and E

d

A only

answer is B.

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Detailed Solution

Each spermatogonium is diploid and contains 46 chromosomes (44+XY). Some of the spermatogonia called primary spermatocytes periodically undergo meiosis.

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