Which phase of interphase is the most importa | vedclass

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(A) The $G_1$ phase (Gap $1$) is the most critical checkpoint in the cell cycle. During this phase,the cell assesses its internal and external environ

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$G_1$ phase

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(A) The $G_1$ phase (Gap $1$) is the most critical checkpoint in the cell cycle. During this phase,the cell assesses its internal and external environment to determine whether to proceed with $DNA$ replication ($S$ phase) or exit the cycle and enter the $G_0$ phase (quiescent stage). In the $G_0$ phase,cells remain metabolically active but do not proliferate unless signaled to re-enter the cell cycle.

Which phase of interphase is the most important point in regulation of the cell cycle,during which it must decide whether the cell will start a new cycle or will enter in $G_0$ phase?

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