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The nucleic acid base found in mRNA but not in DNA is
Question

The nucleic acid base found in mRNA but not in DNA is

A.

Adenine

B.

Cytosine

C.

Guanine

D.

Uracil

Correct option is D


Uracil (U) is found in RNA (including mRNA) but not in DNA. In DNA, Thymine (T) pairs with Adenine, whereas in RNA, Uracil replaces Thymine and pairs with Adenine. This is a key structural difference between DNA and RNA.

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