DNA
noun
\ ˌdē-ˌen-ˈā
\
\
Definition of DNA
: any of various nucleic acids that are usually the molecular basis of heredity, are constructed of a double helix held together by hydrogen bonds between purine and pyrimidine bases (see base entry 1 sense 6b) which project inward from two chains containing alternate links of deoxyribose and phosphate, and that in eukaryotes are localized chiefly in cell nuclei — compare recombinant dna
Illustration of DNA
DNA: A molecular model: 1 hydrogen, 2 oxygen, 3 carbon in the helical phosphate ester chains, 4 carbon and nitrogen in the cross-linked purine and pyrimidine bases, 5 phosphorus; B double helix
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More Definitions for DNA
DNA
noun
English Language Learners Definition of DNA
: a substance that carries genetic information in the cells of plants and animals
See the full definition for DNA in the English Language Learners Dictionary
DNA
noun
\ ˌdē-ˌen-ˈā
\
\
Kids Definition of DNA
: a large organic molecule that carries genetic information in the chromosomes and resembles a twisted ladder
DNA
noun
\ ˌdē-ˌen-ˈā
\
\
Medical Definition of DNA
: any of various nucleic acids that are usually the molecular basis of heredity, are constructed of a double helix held together by hydrogen bonds between purine and pyrimidine bases which project inward from two chains containing alternate links of deoxyribose and phosphate, and that in eukaryotes are localized chiefly in cell nuclei
— called also deoxyribonucleic acid
— see recombinant dnaKeep scrolling for more