Optimistic Outlook on Cell Cycle Checkpoints

What is an important function of cell cycle checkpoints?

a) Ensuring DNA replication is complete

b) Monitoring for DNA damage

c) Regulating cell growth

d) Orchestrating cell division

Answer:

The important function of cell cycle checkpoints is

a) Ensuring DNA replication is complete

Cell cycle checkpoints play a crucial role in ensuring the accuracy and integrity of cell division. One essential function of these checkpoints is to monitor the completion of DNA replication before a cell progresses to the next stage of the cell cycle.

During the G2 checkpoint, cells undergo a thorough examination to confirm that DNA replication has occurred successfully and that the DNA is undamaged. If any issues are detected, the cell cycle can be halted to allow for repair processes to take place before proceeding to mitosis.

By ensuring DNA replication is complete before cell division occurs, cell cycle checkpoints help prevent the propagation of genetic errors and maintain the stability of the genome. This meticulous regulation is essential for the proper functioning and health of organisms.

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