Question:
Assertion (A): Uracil base is present in DNA.
Reason (R): DNA undergoes self-replication.
Assertion (A): Uracil base is present in DNA.
Reason (R): DNA undergoes self-replication.
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In DNA, thymine pairs with adenine, while in RNA, uracil replaces thymine and pairs with adenine.
Updated On: Feb 25, 2025
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false
- Assertion (A) is false, but Reason (R) is true.
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The Correct Option is D
Solution and Explanation
- Uracil is not present in DNA; instead, thymine (T) is present. Uracil is found in RNA, not DNA.
- However, DNA does undergo self-replication via semi-conservative replication, making the reason true.
- Since Assertion (A) is false but Reason (R) is true, option (D) is correct.
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