Question

Which of the following is a pyrimidine base?
a) Uracil
b) Adenine
c) Guanine
d) Riboflavin​

Answer 1

ᴀ) ᴜʀᴀᴄɪʟ

is the correct answer.

Answer 2

Purines are of two types .... ADENINE(in dna,dna) and GUANINE( in dna,rna)....

Pyrimidines are of three types.....

CYTOSINE( in dna,rna) , THYMINE( in dna), and URACIL(in rna)...

so the correct answer is (A)