Nucleotide

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A unit that polymerizes into nucleic acids (DNA or RNA). Each nucleotide consists of a nitrogenous base, a sugar (ribose in the case of RNA, deoxyribose in the case of DNA), and a phosphate molecule.

A subunit of RNA or DNA containing a base, a phosphate, and a sugar; thousands of nucleotides link up to form a molecule of DNA or RNA.

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