Which pyrimidine base is present in both DNA and RNA?

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Study for the Biochemistry Module 6 Exam. Study with flashcards and multiple choice questions; each question includes hints and explanations. Gear up to ace your test!

Multiple Choice

Which pyrimidine base is present in both DNA and RNA?

Explanation:
Pyrimidines are single-ring bases, and the one that appears in both DNA and RNA is cytosine. Uracil is used in RNA in place of thymine, which is the pyrimidine found in DNA. Adenine is a purine, not a pyrimidine. So cytosine is the base shared by both DNA and RNA.

Pyrimidines are single-ring bases, and the one that appears in both DNA and RNA is cytosine. Uracil is used in RNA in place of thymine, which is the pyrimidine found in DNA. Adenine is a purine, not a pyrimidine. So cytosine is the base shared by both DNA and RNA.

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