Question

Which of the following is not a pyrimidine ?

• A. Thymine
• B. Uracil
• C. Guanine
• D. Cytosine

Answer 1

Answer: (C)

The nitrogenous bases are of two types:
(a) Pyrimidine base-cytosine, thymine Purine base-adenine, guanine.
(b) These nitrogenous bases are found in DNA/RNA.
Uracil is found in RNA in place of thymine.