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Deoxyribonucleic acid


Noun

1. A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions.

DNA, which consists of a polysugar-phosphate backbone possessing projections of Purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine). (online-medical-dictionary.org)

2. A double-stranded nucleic acid that contains the genetic information for cell growth, division, and function. (biology-online.org)

3. A nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms (with the exception of RNA viruses). (Wikipedia.com)

Also known as DNA.

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