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In G2 of interphase, DNA content per cell relative to G1 is:
ADoubled (2C → 4C after S phase)
BSame
CTriple
DHalved
Answer & Solution
Correct answer: A. Doubled (2C → 4C after S phase)
G1: 2C (diploid, unreplicated). After S: 4C (each chromosome has 2 chromatids). G2: 4C (preparing for mitosis). After mitosis: each daughter back to 2C. Note: chromosome NUMBER stays 2n in G1/G2/early M; only DNA amount changes.
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