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19 July, 22:22

Why is it important that the nitrogenous bases (A, T, G and C) are weakly bonded together by hydrogen bonds?

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  1. 20 July, 00:11
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    During cell division, the DNA must be replicated, since the daughter cells need a complete set of DNA. To create TWO DNA, it must replicate. To replicate, DNA unzips, the bases pair up with a different base, and the backbone bonds.
  2. 20 July, 01:45
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    When the cell divides, it "unzips" the DNA to copy it. Therefore, the bonds must be weak. However if there were no bonds, the DNA would simply fall apart.
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