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: GeneReviews 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 Diseas