NEET 2019 · BiologyCell cyclePrevious Year Question
The correct sequence of phases of cell cycle is :
Answer: (D) G1 → S → G2 → M. Answer: G1 → S → G2 → M Solution: The cell cycle runs through interphase (G1 → S → G2) followed by the M phase, after which the cycle repeats.
- A.M → G1 → G2 → S
- B.G1 → G2 → S → M
- C.S → G1 → G2 → M
- D.G1 → S → G2 → M✓
Correct Answer
(D) G1 → S → G2 → M
Solution & Explanation
Answer: G1 → S → G2 → M Solution: The cell cycle runs through interphase (G1 → S → G2) followed by the M phase, after which the cycle repeats. G1 (cell growth, no DNA replication) precedes S (DNA synthesis), which precedes G2 (preparation for mitosis), which leads into M (actual division). The other options scramble this fixed order; M cannot precede G1 within one continuous cycle as the listed start. NCERT Reference: Ch 10, p.121, lines 30-36 — "The interphase is divided into three further phases"
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