Question

When circumstances forbid cell division, higher eukaryotic cells generally come to a halt at the G2 checkpoint until they receive a signal to divide.True or False?

Answer 1

It is true that higher eukaryotic cells will halt at the G2 checkpoint if circumstances are not favorable for cell division, staying there until the necessary conditions are met and a signal to divide is received.

Step-by-step explanation:

The statement is True. In higher eukaryotic cells, there are internal control mechanisms that monitor and regulate the progression of the cell cycle through various checkpoints. One such checkpoint is the G2 checkpoint, which occurs at the transition from the G2 phase to mitosis. This checkpoint plays a critical role in ensuring that all of the chromosomes have been accurately replicated and that the DNA is free of damage. If the DNA is found to be damaged or not fully replicated, the cell will halt at the G2 checkpoint to attempt repairs or complete replication. Thus, when circumstances forbid cell division, cells may be halted at this checkpoint until the conditions become favorable and they receive a signal to proceed with division.