Question

Aminopurine is base analogous of which nitrogenous base:

• A. Purine
• B. Pyrimidine
• C. Both a and b
• D. Thymine

Answer 1

The correct option is A Purine

The nitrogenous base are classified as either purines or pyrimidines. The two carbon nitrogen ring bases (adenine and guanine) are purines, while the one carbon nitrogen ring base (thymine and cytosine) are pyrimidines.
Aminopurine is a purine analog of guanine and adenine. Therefore, aminopurine is base analogous of purine nitrogenous base.