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Q.

How many pairs of chromosomes do humans have in the nuclei of their cells?

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a

 22 pairs

b

23 pairs

c

46 pairs

d

44 pairs

answer is B.

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Detailed Solution

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The nucleus of the cell in all human beings contains 23 pairs of chromosomes. So, in total there are 46 chromosomes. 

Of these 23 pairs of chromosomes, 22 pairs are autosomes and 1 pair is the sex chromosome. These chromosomes are passed from one generation to the other during reproduction.

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How many pairs of chromosomes do humans have in the nuclei of their cells?