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Which of the following is not a pyrimidi...

Which of the following is not a pyrimidine base?

A

Cytosine

B

Thymine

C

Uracil

D

Guanine

Text Solution

Verified by Experts

The correct Answer is:
D
Guanine is a purine base. The heterocyclic base obtained for nucleosides are capable of existing in more than one tautomeric form. The forms that are shown in the `NCERT` text book are the predominant forms that the base assumes when they are present in nucleic acids.
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