G_1 rightarrow S transition is regulated by | vedclass

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(D) The transition from the $G_1$ phase to the $S$ phase in the cell cycle is a critical checkpoint. This transition is primarily regulated by the for

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$G_1$ cyclin and cdc$2$ kinase

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(D) The transition from the $G_1$ phase to the $S$ phase in the cell cycle is a critical checkpoint. This transition is primarily regulated by the formation of a complex between $G_1$ cyclins and cyclin-dependent kinases (specifically cdc$2$ kinase or its homologs). These complexes phosphorylate target proteins that initiate $DNA$ replication,thereby allowing the cell to progress from the $G_1$ phase into the $S$ phase.

$G_1$ $\rightarrow$ $S$ transition is regulated by

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