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  • 23-02-2020
  • Biology
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Explain why a purine base (Adenine & Guanine) must be paired with a pyrimidine base (Thymine &
Cytosine)​

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gemslime3 gemslime3
  • 23-02-2020

Because hydrogen bonds are not as strong as covalent bonds, base pairings can easily be separated, allowing for replication and transcription. Because purines always bind with pyrimidines – known as complementary pairing – the ratio of the two will always be constant within a DNA molecule.

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