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Q.

The length of DNA present in a haploid cell of man is

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a

1.36 mm

b

1.1 mm

c

1.1m

d

2.2m

answer is C.

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Detailed Solution

The diploid cell of human beings has 6.6 × 109 bp. The length of each base pair is 0.34 ×10-9m.  Hence the length of DNA  of diploid cell of man is 6.6×109×0.34×10-9=2.2m. In a haploid cell the length of DNA is half and is therefore 1.1m.
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