In a diploid cell, there are 14 chromosomes and the DNA content is 2 C after M-phase. What would have been the number of chromosomes and amount of DNA at 
, after 
and 
phase respectively?
No. of chromosomes | Amount of DNA | |
(a) | ||
(b) | ||
(c) | ||
(d) |
Text Solution
Verified by ExpertsNOT AVAILABLE
The DNA content is 
after M-phase. 
phase is the interval phase between mitosis and
initiation of DI replication. In 
phase, the initial amount of DNA was 2 C. In S phase,DNA replicates and the amount of DNA doubls. So now, the amount will be 4 C. In 
phase, there will I no change in the amount of DNA. It remains 4 C.
The number of chromosomes after 
phase is 14 . At 
phase, there will be 14 chromosomes. After S phase, the DNA content doubles but chromosome number still remains same here, i.e., 14. After completion of 
phase, the number of chromosomes will be 28 with each daughter cell having same number of chromosomes as that of parent, i.e., 14.
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