In which stage of cell cycle, DNA replication occurs :

4 2000 AIPMT Cell Cycle and Cell DivisionPhases of cell cycle Easy
In which stage of cell cycle, DNA replication occurs :
A G1 phase
B S phase
C G2 phase
D M phase

Detailed Solution

DNA replication takes place during the S (synthesis) phase of interphase, between $G_1$ and $G_2$.
The amount of DNA doubles from 2C to 4C, but the chromosome number stays the same.
So DNA replication occurs in the S phase.

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