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MDCAT Biology QUESTION #11244
Question 1
In DNA, the amount of adenine equals the amount of thymine, and the amount of guanine equals the amount of cytosine. This is known as:
  • Watson-Crick pairing
  • Chargaff's rules✔️
  • Central dogma
  • Semiconservative replication
Correct Answer Explanation
Chargaff's rules state that in DNA, the molar ratio of adenine equals thymine ($A = T$) and guanine equals cytosine ($G = C$). This reflects the complementary base pairing in the double helix.