In 'S' phase of the cell cycle:

  • Option 1)

    amount of DNA doubles in each cell.

  • Option 2)

    amount of DNA remains same in each cell.

  • Option 3)

    chromosome number is increased.

  • Option 4)

    amount of DNA is reduced to half in each cell.

 

Answers (1)

As learnt in

Phases of Interphase: S Phase (Synthesis) -

Marks the period during which DNA synthesis or replication takes place. During this time, the amount of DNA per cell doubles, but number of chromosomes remain same.

- wherein

During this time, the amount of DNA per cell doubles, but number of chromosomes remain same.

 

 During S-phase, amount of DNA gets doubled.


Option 1)

amount of DNA doubles in each cell.

This answer is correct

Option 2)

amount of DNA remains same in each cell.

This answer is incorrect

Option 3)

chromosome number is increased.

This answer is incorrect

Option 4)

amount of DNA is reduced to half in each cell.

This answer is incorrect

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