Multiple choice

Duplication of DNA occurs in

  1. G1 phase

  2. G2 phase

  3. S phase

  4. M phase

  5. Prophase
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

S-phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. Precise and accurate DNA replication is necessary to prevent genetic abnormalities, which often lead to cell death or disease.

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