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Question: Answered & Verified by Expert
In a diploid cell, at which stage of cell cycle, the amount of DNA is doubled?
BiologyCell Cycle and Cell DivisionAIIMSAIIMS 2013
Options:
  • A $\mathrm{G}_1$ and $\mathrm{G}_2$ phase
  • B $\mathrm{G}_0$ phase
  • C $\mathrm{S}, \mathrm{G}_2$ and $\mathrm{M}$ phase
  • D S phase
Solution:
2307 Upvotes Verified Answer
The correct answer is: S phase
S-phase is known as synthetic phase. In this stage replication of DNA takes place on the template of the existing DNA and thus the amount of DNA per cell doubles. If the initial amount of DNA is denoted as $2 \mathrm{C}$, then it increases to $4 \mathrm{C}$.

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