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Biology, 24.02.2020 21:24 Lydiaxqueen

Which step happens first to a chromosome during cell division?
A. Nucleotides are added to each half of a DNA molecule.
B. A DNA molecule unwinds, exposing the bases on each half.
C. Each half of a DNA molecule acts as a template.
D. Two identical DNA molecules form.

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Which step happens first to a chromosome during cell division?
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