What must happen to a chromosome before a cell starts mitosis? What must happen to a chromosome before a cell starts mitosis? A. The two chromatids of the chromosome must become attached to each other. B. Both molecules of DNA in the chromosome must be replicated. C. The chromatin of the chromosome must be completely condensed. D. The single DNA molecule in the chromosome must be replicated.
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What must happen to a chromosome before a cell starts mitosis? What must happen to a chromosome befo...
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