Cell Cycle and Cell Division Question 8
8. In ‘S’ phase of the cell cycle:
[2014]
(a) Amount of DNA doubles in each cell.
(b) Amount of DNA remains same in each cell.
(c) Chromosome number is increased.
(d) Amount of DNA is reduced to half in each cell.
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Answer : a
Hints & Solutions
(a) During $S$ or synthesis phase, replication or duplication of chromosomal DNA and synthesis of histone proteins takes place. During this time the amount of DNA per cell doubles.
