The G₂ checkpoint prevents the cell cycle from continuing until A) DNA is completely replicated. B) damage to DNA can be repaired. C) replicated DNA is separated. D) organelles have been duplicated. E) DNA is completely replicated AND damage to DNA can be repaired.

Question

Quizplus · Accepted Answer

The G₂ checkpoint is also known as the G1/S checkpoint, which occurs at the end of the G1 phase before the cell enters the S phase. This checkpoint ensures that the cell has properly replicated its DNA and that any damage to the DNA has been repaired before entering the S phase. Therefore, both choices A and B are correct, and the best answer is E. Choices C and D are not correct because the completion of DNA replication and organelle duplication occur later in the cell cycle during the S phase and G2 phase, respectively.

The G2 Checkpoint Prevents the Cell Cycle from Continuing Until

The G₂ Checkpoint Prevents the Cell Cycle from Continuing Until