Question

Which of the following is a purine?

A
Cytosine
B
Guanine
C
Thymine
D
Uracil
Solution
Verified by Toppr

In DNA, the purine bases adenine and guanine form hydrogen bonds with their complementary pyrimidines, thymine, and cytosine, respectively. This is called as a complementary base pairing. So, guanine is a purine
So, the correct answer is 'Guanine'

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