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Q.

A gamete contains 22 pg DNA. What will be the amount of DNA present in its somatic cells after completion of the S phase of the cell cycle?

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a

22 pg

b

44 pg

c

88 pg

d

11 pg

answer is C.

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Detailed Solution

Gamete contains 1n number of chromosome and 1c amount of DNAA normal somatic cell at G1 phase contains 2n number of chromosomes and 2c amount of DNA. At S phase the amount of DNA doubles but the number of chromosomes remain the same.Therefore, the amount of DNA is 4c= 22 X 4 = 88pg.
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