Question

Which of the following represents the CORRECT order of events in the eukaryotic cell cycle?

• A. G1 → S → G2 → M
• B. S → G1 → M → G2
• C. G1 → S → M → G2
• D. S → G1 → G2 → M

Hint:

Easy mnemonic: “Grow → Synthesize → Grow again → Mitosis” = G1 → S → G2 → M.

Answer 1

The Correct Option is A

Step 1: Recall phases of cell cycle.
- G1 (Gap 1): Cell growth and preparation.
- S (Synthesis): DNA replication occurs.
- G2 (Gap 2): Further growth and preparation for mitosis.
- M (Mitosis): Chromosome segregation and cytokinesis.
Step 2: Compare sequences.
Only option (A) correctly follows the standard cell cycle order.
Final Answer: \[ \boxed{\text{Correct order is G1 → S → G2 → M.}} \]