Home >  Term: deoxyribonucleic acid (DNA)
deoxyribonucleic acid (DNA)

A polymeric chromosomal constituent of living cell nuclei, composed of deoxyribose (a sugar), phosphoric acid, and four nitrogen bases: adenine, cytosine, guanine, and thymine. It contains the genetic information for living organisms, and consist of two strands in the shape of double helix. A gene is a piece of DNA.

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