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Which one of the following bases is not present in DNA?

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Which one of the following bases is not present in DNA?

(a) Quinoline

(b)  Adenine

(c) Cytosine

(d) Thymine

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Correct Option (a) Quinoline

Explanation:

DNA contains four nitrogenous pyramidine bases, adenine, guanine, cytosine, thymine. While quinoline is an alkaloid, hence, it is not present in DNA.

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