When cell has stalled DNA replication fork , which checkpoint should be predominantly activated

Options

A. `G_(1)//S`
B. ` G_(2)//M`
C. M
D. Both ` G_(2)//M and M`

Answer

A

Explanation

Stalled forks activate checkpoint signaling and pause replication. Since, ` G_(1)`/ S checkpoint checks DNA damage, cells size prior to S-phase (i.e. DNA replication phase), this checkpoint would be activated by stalled DNA replication fork.