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Question

In a human cell 2.2 metre long thread of DNA distributed in:-

A
One chromosome
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B
23 chromosome
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C
X chromosome
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D
46 chromosome
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Solution

The correct option is D 46 chromosome
In a human cell with 46 chromosomes in its nucleus, there are approximately 6.4 billion base pairs. Each of these base pairs has a length of about 0.34 nm. Thus, the length of the total amount of DNA in a diploid cell would have a length of about 2.2 m.
So, the correct answer is '46 chromosomes'.

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