adenine NH Bases in dNa H一 Adenine(A) guanine Purines N9 Guanine(G) N N cytosine H yrimidine Cytosine(C) H N pyrimidines thymine Thymine(T) N 004 Pearson Education, Inc, publishing as benjarPurines pyrimidines Adenine (A) Guanine (G) Cytosine (C) Thymine (T) N9 N1 Bases in DNA