Question

In 'S' phase of the cell cycle:

• 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

Answer 1

The correct option is A Amount of DNA doubles in each cell

In S (synthesis) phase, DNA synthesis or replication takes place. During this time the amount of DNA per cell doubles which means if the initial amount of DNA was 2C then it increases to 4C.
So, the correct answer is option 'a'.