Question

In which phase of the cell cycle do cells check to determine whether the DNA is fully and correctly replicated?

A) at the transition between G, and S
B) when cells enter Go
C) during M
D) at the end of G2

Answer 1

Cells perform a check to ensure DNA is correctly replicated at the G2 checkpoint, which occurs at the end of the G2 phase of the cell cycle.

Step-by-step explanation:

Cells check to determine whether the DNA is fully and correctly replicated at the end of the G2 phase of the cell cycle. The G2 checkpoint is crucial as it ensures that all chromosomes have been replicated and that the replicated DNA is not damaged.

If any issues are detected, the cell can halt the cycle for repairs or complete DNA replication before proceeding to mitosis.