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Question

During cell growth, DNA synthesis takes place in
  1. S phase
  2. G2 phase
  3. G1 phase
  4. M pahse

A
M pahse
B
G1 phase
C
S phase
D
G2 phase
Solution
Verified by Toppr

  • Interphase is the period between two subsequent M phases and consists of three phases: G1, S phase (the period of DNA replication) and G2 phase.
  • The G1 phase is the gap between M phase and S phase and is marked by synthesis of RNA and protein (excluding histones) and duplication of all cell content except DNA.
  • S phase of DNA replication and cell division is followed by G2 phase during which cell double-checks the duplicated DNA content.

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