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Nucleotide

Definition(s)

A molecule consisting of a nitrogenous base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA), a phosphate group, and a sugar (deoxyribose in DNA; ribose in RNA). DNA and RNA are polymers of many nucleotides.: Definition from: GeneTests from the University of Washington and the National Center for Biotechnology Information
A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.: Definition from: Talking Glossary of Genetic Terms from the National Human Genome Research Institute
A subunit of DNA or RNA, consisting of one chemical base plus a phosphate molecule and a sugar molecule.: Definition from: Office of Rare Diseases at the National Institutes of Health


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