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Life is the most difficult exam many people fail because they try to copy others, not realising that everyone has a different question paper explain the structure of DNA ? |
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Answer» The DNA molecule is a polymer of nucleotides. Each nucleotide is COMPOSED of a nitrogenous base, a five - carbon sugar ( deoxyribose ), and a PHOSPHATE GROUP. There are four nitrogenous bases in DNA, two purines ( adenine and guanine ) and two pyrimidines ( cytosine and THYMINE ). A DNA molecule is composed of two strands. |
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