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22-09-2021
Biology

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

Respuesta :

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20-10-2021

Answer:

D

Explanation:

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