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Explain why the structure of DNA is described as a double helix
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Explain why the structure of DNA is described as a double helix

User PaulWoodIII
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The double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a spiral staircase. Each chain has a backbone in which a sugar (deoxyribose) and a phosphate group alternate.

User Neubert
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