All of the Following are Purine Bases Except _____

Question

All of the following are purine bases except _____.
A) Guanine
B) Thymine
C) Adenine
D) Hypoxanthine
E) All of the above are purine bases

Accepted Answer

Thymine is a pyrimidine base, not a purine base. Guanine, Adenine, and Hypoxanthine are all purine bases.