How is pyrimidine composition different in DNA and RNA?
A
DNA is mostly made up of pyrimidines
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B
DNA has thymine and RNA has uracil
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C
DNA has uracil and RNA has thymine
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D
RNA is mostly made up of pyrimidines
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Solution
The correct option is B DNA has thymine and RNA has uracil There are three types of pyrimidines - cytosine, thymine and uracil. DNA contains cytosine and thymine, while RNA contains cytosine and uracil. In RNA, thymine gets replaced by uracil.