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26 July, 10:31

What are long strands of DNA made of?

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  1. 26 July, 10:48
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    Genes are made of a chemical called DNA, which is short for 'deoxyribonucleic acid'. The DNA molecule is a double helix: that is, two long, thin strands twisted around each other like a spiral staircase. The sides are sugar and phosphate molecules
  2. 26 July, 10:49
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    DNA strands are made of a double helix combined by hydrogen bonds.
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