The normal body cell of an organism contains 28 pairs of chromosomes. The number of chromosomes present in its germ cell will be:(a) 28 (b) 14 (c) 56 (d) 42
Correct Answer: (a) 28
Explanation:
There are two types of cells in the human body:
(i) Somatic cell or normal body cells (such as cells present in skin, intestinal, etc.) that are not involved in reproduction;
(ii) Germ cell (sperm cell and egg cell) that are involved in reproduction.
Somatic cell or normal body cells contain 28 pair of chromosomes.
Therefore, 28*2 = 56 chromosomes (as one pair is equal to two chromosomes).
Germ cells are haploid in nature therefore they contain only 28 chromosomes (not in pair, but singly).
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