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प्रश्न
An unknown chemical is analysed and found to contain the bases thymine and guanine. The chemical is most likely ______.
पर्याय
tRNA
mRNA
DNA
rRNA
MCQ
रिकाम्या जागा भरा
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उत्तर
An unknown chemical is analysed and found to contain the bases thymine and guanine. The chemical is most likely DNA.
Explanation:
The chemical is most likely DNA because it contains thymine, which is a nitrogenous base unique to DNA and not found in any form of RNA. While both DNA and RNA contain guanine, cytosine, and adenine, they differ in their fourth base; DNA uses thymine, whereas all types of RNA (mRNA, tRNA, and rRNA) use uracil instead. Therefore, the presence of thymine acts as a definitive biological marker that identifies the mystery substance as deoxyribonucleic acid.
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