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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: GeneTestsThis link leads to a site outside Genetics Home Reference. from the University of Washington and Children's Health System, Seattle

One of the structural components, or building blocks, of DNA and RNA. A nucleotide consists of a base (one of four chemicals: adenine, thymine, guanine, and cytosine) plus a molecule of sugar and one of phosphoric acid.

Definition from: Talking Glossary of Genetic TermsThis link leads to a site outside Genetics Home Reference. 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 DiseasesThis link leads to a site outside Genetics Home Reference. at the National Institutes of Health

Related discussion in the Handbook

 
Published: January 23, 2009