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Question

In RNA, apart from ribose and phosphate, all are present except

A
Adenine
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B
Guanine
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C
Thymine
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D
Uracil
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Solution

The correct option is C Thymine
Ribonucleic acid is a long polymer of ribonucleotides. Each ribonucleotide is made up of ribose sugar, phosphoric acid and nitrogenous base. The nitrogenous bases in ribonucleotides are of two types - purine bases (adenine and guanine) and pyrimidine bases (cytosine and uracil). The pyrimidine bases present in DNA are cytosine and thymine. Thus, thymine is absent from RNA.

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