Adenine pairs with thymine because

Adenine pairs with thymine because
  • A.
    the two occur in the same nucleic acid
  • B.
    one is a strong base and the other a weak base
  • C.
    two purine bases easily pair up
  • D.
    one is a purine base and the other a pyrimidine.
Correct Answer: Option D
Explanation
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