Final answer:
The G1 checkpoint in cell division checks for DNA damage, while the G2 and M checkpoints monitor chromosome duplication and spindle fiber attachments, respectively.
Explanation:
The G1 checkpoint in the cell cycle is the stage that checks for DNA damage. This checkpoint evaluates if conditions are suitable for cell division to proceed and ensures the integrity of the genomic DNA.
At the G2 phase, proper chromosome duplication is assessed, and the M phase evaluates the attachment of each kinetochore to spindle fibers. The M checkpoint ensures correct attachment before the cell moves to anaphase.
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