Which of the following bases is not present in RNA?

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Adenine

Thymine

Cytosine

Guanine

answer is B.

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Detailed Solution

Thymine is the base that is not present in RNA.

In RNA, there are four nitrogenous bases namely adenine, guanine, cytosine, and uracil. In DNA, there are also four nitrogenous bases, namely adenine, guanine, cytosine, and thymine. Thus, Thymine is the base that is not present in the RNA.

Hence, the correct answer is option B) Thymine.

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