The Importance of the G2 Checkpoint in Cell Division
What is the significance of the G2 checkpoint in the cell cycle?
A. It ensures proper DNA replication
B. It controls cell size and protein reserves
C. It monitors chromosome segregation
D. It regulates cell division
Answer:
The answer is A. It ensures proper DNA replication.
Final answer:
The G2 checkpoint in the cell cycle is where the cell ensures the DNA has been accurately replicated. It is a crucial stage in cell division to prevent erroneous DNA replication. Here, the cell assesses the cell size, protein reserves, and the integrity of replicated DNA.
In the cell cycle, the G2 checkpoint is the stage at which the cell ensures that the DNA has been properly replicated. The G2 checkpoint is crucial for preventing errors in DNA replication from being passed on to daughter cells. During this checkpoint, mechanisms assess if the cell size and protein reserves meet the requirements. The most pivotal role of the G2 checkpoint, however, is to ensure that all chromosomes have been successfully replicated and the replicated DNA is not damaged. If any issues pertaining to the DNA are detected, the cell cycle is stopped, and the cell attempts to either finish DNA replication or resolve the issues in the replicated DNA.