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Nucleic Acids

AP Biology· difficulty 2/5

In DNA, adenine pairs with thymine via _______ hydrogen bonds, while guanine pairs with cytosine via _______ hydrogen bonds.

  • A

    2; 3

    check_circle
  • B

    1; 2

  • C

    3; 4

  • D

    3; 2

Explanation

A=T (2 H-bonds), G≡C (3 H-bonds). G-C pairs are slightly stronger due to the extra hydrogen bond.

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