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Analyse the events during every stage of...

Analyse the events during every stage of cell cycle and notice how the following two parameters change
(i) Number of chromosomes (N) per cell
(ii) Amount of DNA content (C) per cell

Text Solution

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(i) In `G_(1)`-phase, the number of chromosomes (N) cell remains ameandeach chromosome is formed of one chromatid. In S-phase, each chromosome is formed of two sister chromatids joined at the centromere Same condition continues in `G_(2)`-phase
while in M-phase, sister chromatids separate and move to different cells but the number of chromosome remains same in mitosis.
(ii) In` G_(1)`-phase, the amount of DNA content (C) per cell remains same but in S-phase # is doubled. due to DNA replication. It remains double in `_(2)`G-phase but is halved in M-phase of cell cycle.
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