Question:
Identify the set containing purine and pyrimidine base of DNA respectively.
Identify the set containing purine and pyrimidine base of DNA respectively.
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Remember: DNA contains A, G (purines) and C, T (pyrimidines). Uracil replaces thymine in RNA.
Updated On: Jun 4, 2025
- Adenine, Uracil
- Cytosine, Guanine
- Thymine, Uracil
- Adenine, Cytosine
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The Correct Option is D
Solution and Explanation
Step 1: Know the purine and pyrimidine bases.
- Purines: Adenine (A), Guanine (G)
- Pyrimidines: Cytosine (C), Thymine (T), Uracil (U — found in RNA, not DNA)
Step 2: Eliminate incorrect options.
- Option (1): Uracil is not a component of DNA (RNA only)
- Option (2): Guanine is a purine, Cytosine is a pyrimidine, but order is reversed
- Option (3): Uracil is not present in DNA
- Option (4): Adenine (purine) and Cytosine (pyrimidine) is the correct pair in correct order.
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