In the 'S' phase of the cell cycle:

In the 'S' phase of the cell cycle:
  1. Amount of DNA doubles in each cell
  2. Amount of DNA remains same in each cell
  3. Chromosome number is increased
  4. Amount of DNA is reduced to half in each cell

Solution

S-phase/Synthetic phase (a) DNA replicates and its amount becomes double (2C→ 4C). 
(b) Synthesis of histone proteins.
(c) Euchromatin replicates earlier than heterochromatin.
(d) Synthesis of NHC (non-histone chromosomal proteins).
(e) Each chromosome has 2 chromatids. Amount of DNA doubles but the chromosome number remains constant.

Asked in: NEET 2014

Practice more Cell Cycle and Cell Division questions on Aicharya