MCQ
DNA nitrogenous bases MCQ - Practice Questions with Answers
Solve 1 DNA nitrogenous bases questions for RAS/RPSC preparation.
Practice questions
Q1Which of the following nitrogenous bases is not a component of DNA?
Explanation
DNA contains four nitrogenous bases: adenine, guanine, cytosine and thymine. Uracil is not present in DNA; it is found in RNA, where it generally pairs with adenine. Cytosine is a pyrimidine base present in DNA and pairs with guanine. Adenine is a purine base present in DNA and pairs with thymine. Guanine is also a purine base present in DNA and pairs with cytosine. Therefore, uracil is the nitrogenous base that is not a component of DNA.
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