Mitosis · Botany

During which phase of the cell cycle does DNA replication occur to ensure both daughter cells receive a complete genome?

  1. G1 phase
  2. G2 phase
  3. M phase
  4. S phase
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Correct answer: S phase

The S phase (Synthesis phase) of interphase is dedicated to DNA replication. Each chromosome is duplicated to form two sister chromatids joined at the centromere.

Difficulty: Medium Question 2 of 20

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