If a diploid cell with 20 chromosomes and 32 C DNA enters a cell cycle then what will be the number of chromosomes and DNA after S-phase?
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a
20 chromosomes and 32 C DNA
b
20 chromosomes and 64 C DNA
c
40 chromosomes and 32 C DNA
d
40 chromosomes and 64 C DNA
answer is B.
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Detailed Solution
In S-phase, the amount of DNA doubles but number of chromosomes remain same.Cells with 20 chromosome and 32 C DNA in G1 phase results in cell with 20 chromosome and 64 C DNA in S-phase.