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).
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DNA is a double helix formed ghr.nlm.nih.gov
What's Your DNA Worth? www.forbes.com
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