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11 grade biology others

Which among these is not a pyrimidine?A. Guanine B. Thymine C. Uracil D. Cytosine.

Profile image of Aniket Singh
1 Year agoGrade
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1 Answer

Profile image of Askiitians Tutor Team
1 Year ago

The correct answer is A. Guanine.

Guanine is a purine, not a pyrimidine.

To clarify, here is the classification of each option:

Guanine: Purine
Thymine: Pyrimidine
Uracil: Pyrimidine
Cytosine: Pyrimidine
Purines have a double-ring structure, whereas pyrimidines have a single-ring structure.