define DNA double helix...
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A DNA double helix consists of two spiral chains of deoxyribonucleic acid. The shape is similar to that of a spiral staircase. DNA is a nucleic acid composed of nitrogenous bases ( adenine, cytosine, guanine and thymine) , a five - carbon sugar (deoxyribose) , and phosphate molecules.
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sold 50% of ₹18000 goods available to sachin at a profit 33⅓% on cost. what will be its journal entry
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