Purine derivative among the following bases is ___.
A
Guanine
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B
Cytosine
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C
Thymine
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D
Uracil
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Solution
The correct option is A Guanine A purine is a heterocyclic aromatic organic compound that consists of a pyramidine ring fused to an imidazole ring. Adenine and guanine are the purine bases and thymine and cytosine are the pyramidine bases in nucleic acids.