Purines and pyrimidines are the nitrogen bases that hold DNA strands together through hydrogen bonds.
Explanation:
The purines in DNA are adenine and guanine, the same as in RNA. The pyrimidines in DNA are cytosine and thymine; in RNA, they are cytosine and uracil.
Answer:
Purine: Adenine and Guanine
Purine example: Uric Acid
Pyrimidine: Cytosine, Thymine and Uracil
Pyrimidine example: Pipemidic Acid
