Biology 9700 · AS & A Level · Structure of nucleic acids and replication of DNA

Structure of nucleic acids and replication of DNA — practice question

When adenine and cytosine each pair with their complementary bases, how many hydrogen bonds are formed?

  • Aadenine: 2, cytosine: 2
  • Badenine: 2, cytosine: 3
  • Cadenine: 3, cytosine: 2
  • Dadenine: 3, cytosine: 3

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