Question 34 of 38
Q.The correct sequence in cell cycle is:
(a) G1 - S - G2 - M
(b) S - M - G1 - G2
(c) M - G1 - G2 - S
(d) S - G1 - G2 - M
Puducherry TnboardTamil Nadu HSC First Year (DGE) Board 2026MCQ· 1mImportance★★★★★
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Start your 14-day free trial to unlock the full solution →The correct order of the cell cycle is G1, then S, then G2, then M.
The eukaryotic cell cycle is divided into interphase (the period between two successive divisions, during which the cell is metabolically active but not dividing) and M phase (mitosis, where actual division occurs). Interphase itself is subdivided into three sequential sub-phases:
- G1 (Gap 1): the cell grows, is metabolically active, and synthesises RNA/proteins needed for the coming S phase; the cell is NOT yet replicating DNA.
- S (Synthesis): DNA replication occurs; the amount of DNA per cell doubles, but the chromosome number stays the same (each chromosome now has two sister chromatids).
- G2 (Gap 2): further growth and synthesis of proteins needed for mitosis (e.g., tubulin for the spindle) takes place; the cell prepares to divide. …
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