Correct option is B
Ans. (b)
Sol. A
normal human cell contains
23 pairs of chromosomes, totaling
46 chromosomes. These include
22 pairs of autosomes and
1 pair of sex chromosomes (XX in females, XY in males). This complete set is present in
diploid cells, such as somatic cells. Gametes (sperm and egg) carry only
23 single chromosomes.
Explanation of each option:
·
(a) 22 – Refers only to the
autosomal pairs, excluding sex chromosomes.
·
(b) 23 –
Correct answer. Total number of
chromosome pairs in humans.
·
(c) 46 – Total number of
individual chromosomes, not pairs.
·
(d) 44 – Number of
autosomal chromosomes (22 pairs), excluding the sex chromosomes.
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