- A DNA is replicated without errors before mitosis
- B Cells have accumulated enough stored nutrients
- C The mitotic spindle apparatus is largely assembled
- D Cytokinesis has been completed successfully
Correct answer: A. DNA is replicated without errors before mitosis
Explanation: G2 checkpoint: verifies DNA replication is complete and error-free before entering mitosis. Damaged DNA triggers arrest.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.