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Both DNA and Rna are composed of, first, the sugar-phosphate backbone. The sugar is ribose and the phosphate is a PO4 (-2) moiety. Reaching laterally are the third components - the nucleotide bases.

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12y ago
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Phosphate group, 5-carbon sugar, and nitrogenous base.

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Sugar, Phosphate and Nitrogen Bases.

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Q: The nucleotides forming DNA are composed of what three molecular components?
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