Which one is correct about S-phase (synthetic phase)? (I) I…

Biology Cell Cycle and Cell Division Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Which one is correct about S-phase (synthetic phase)?

(I) It occurs between G1 and G2

(II) It marks the period during which DNA replicates

(III) At the end of this phase DNA is doubled but the number of chromosomes remains unchanged

(IV) As the DNA is doubled in this phase number of chromosomes is also doubled

(V) Centrioles replicate in this phase

(VI) Amount of DNA changes from 2C to 4C

(VII) It is pre G2 and post G1 phase

I, II, IV, V, VI , VII are correct

I, II, III, V, VI, VII are correct

All are correct

Only IV is correct

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