- A Cell division proceeds continuously at the fastest possible rate without pause
- B DNA is correctly replicated and chromosomes properly aligned before proceeding
- C Cell division is permanently and irreversibly halted in every body tissue
- D Only the G1 restriction point is monitored, with all later phases unchecked
Correct answer: B. DNA is correctly replicated and chromosomes properly aligned before proceeding
Explanation: Cell cycle checkpoints (G1, S, G2/M, spindle) monitor DNA integrity and proper chromosome attachment. Damaged cells don't proceed.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.