alleryAt the end of S phase, each chromosome consists of:
A1 chromatid
BRandom
C4 chromatids
D2 sister chromatids joined at centromere
Answer & Solution
Correct answer: D. 2 sister chromatids joined at centromere
After replication, each chromosome has 2 identical sister chromatids attached at centromere.
They will separate to opposite poles during anaphase.
Chromosome number stays same (2n) but DNA content doubles (2C → 4C).
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