Which of the following is not true concerning the checkpoints in the cell cycle?
A)Mitosis stops if chromosomes are not properly aligned.
B)Mitosis will not occur if DNA is damaged or not replicated.
C)If DNA is damaged,apoptosis may occur.
D)The first checkpoint is located in the S phase of interphase.
E)Cyclins must be present at certain stages to advance to the next stage.

Question

Quizplus · Accepted Answer

The first checkpoint is actually located in the G1 phase of interphase, not the S phase. The G1 checkpoint checks for cell size, nutrient availability, and DNA damage before allowing the cell to proceed to the S phase where DNA replication occurs.

Which of the Following Is Not True Concerning the Checkpoints