Final answer:
The G1 checkpoint in cell division is responsible for assessing DNA integrity before a cell proceeds with division, ensuring genomic stability.
Step-by-step explanation:
In cell division, the G1 checkpoint participates in the G1 checkpoint for DNA integrity. The G1 checkpoint is critical for ensuring that all conditions are favorable for cell division, which includes the assessment of genomic DNA damage. If any damage is detected, the cell can either repair the damage, halt the cycle, or enter a quiescent state known as G0 until conditions improve. This checkpoint plays a vital role in maintaining the integrity of the organism's genome and preventing the propagation of damaged DNA.