Select the correct statements regarding S-pha | vedclass

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(D) $S$-phase is the sub-phase between $G_{1}$-phase and $G_{2}$-phase,during which $DNA$ synthesis or replication takes place.In animal cells,during

Vedclass · Accepted Answer

$I, II$ and $III$

Vedclass · Answer

(D) $S$-phase is the sub-phase between $G_{1}$-phase and $G_{2}$-phase,during which $DNA$ synthesis or replication takes place.In animal cells,during the $S$-phase,$DNA$ replication begins in the nucleus and centriole duplication occurs in the cytoplasm.The amount of $DNA$ per cell doubles in the nucleus. If the initial amount of $DNA$ is denoted as $2C$,it increases to $4C$.However,there is no increase in the chromosome number; the number of chromosomes remains the same as it was in the $G_{1}$-phase.Therefore,statements $I, II,$ and $III$ are correct,while statement $IV$ is incorrect.

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