Topic: DNA as genetic material, DNA and RNA structure, DNA packaging· Genetics and Evolution

Purines found both in DNA and RNA are :

1. Adenine and thymine

2. Adenine and guanine

3. Guanine and cytosine

4. Cytosine and thymine

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Answer: 2. Adenine and guanine

The purines are adenine and guanine, and both are present in DNA and RNA. Thymine and cytosine are pyrimidines, and thymine occurs only in DNA. Option 2 is correct.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Purines found both in DNA and RNA are :

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