Answer: The phase between divisions (G1, S, G2).
- A The stage of active division mainly
- B The phase between divisions (G1, S, G2)
- C Mainly the G1 stage
- D Mainly DNA synthesis
Correct answer: B. The phase between divisions (G1, S, G2)
Explanation: Interphase (G1 + S + G2) is the longest phase. Cell grows, copies DNA, and prepares for division.
The cell cycle: G1 (growth and preparation), S (DNA replication, chromosome number stays 2n but DNA content doubles), G2 (final checks before division), and M (mitosis itself) - together, G1+S+G2 make up interphase.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.