Question

The nucleobase NOT found in DNA is

• A. Thymine
• B. Uracil
• C. Guanine
• D. Adenine

Hint:

Uracil is found in RNA, whereas thymine is found in DNA. Remember the differences between RNA and DNA bases.

Answer 1

The Correct Option is B

Step 1: Understanding nucleobases in DNA.
DNA contains four nucleobases: adenine (A), thymine (T), cytosine (C), and guanine (G). Uracil (U) is found in RNA, not in DNA.

Step 2: Analyzing the options.
(A) Thymine: Thymine is a nucleobase found in DNA.
(B) Uracil: Uracil is not found in DNA, it is found in RNA.
(C) Guanine: Guanine is a nucleobase found in DNA.
(D) Adenine: Adenine is a nucleobase found in DNA.

Step 3: Conclusion.
The correct answer is (B) Uracil.