erwin-chargaff-discovered-that-in-a-dna-molecule-the-number-of-purines-always-eq

Question

Erwin Chargaff discovered that in a DNA molecule, the number of purines always equals the number of pyrimidines. Which of the following base pairs correctly represents a purine-pyrimidine pair?

Accepted Answer

Guanine (G) - Cytosine (C)

Answer

Adenine (A) - Guanine (G)

Answer

Cytosine (C) - Thymine (T)

Answer

Adenine (A) - Cytosine (C)