THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is not found in tRNA?
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adenine
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guanine
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cytosine
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thymine
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Explanation:
Detailed explanation-1: -Note that thymine (=5-methyl uracil), which is normally only found in DNA, is also found in the TC-loop of tRNA, where it is attached to ribose and is made by methylation of uracil after transcription. In addition to uracil, guanine, adenine, and cytosine may also be modified by methylation.
Detailed explanation-2: -Thus, the tRNA molecule does not contain a codon.
Detailed explanation-3: -Note that DNA contains thymine (T) but no uracil (U) and that both mRNA and tRNA contain U and not T.
Detailed explanation-4: -2. Which of the following are not the components of RNA? Explanation: Thymine is present in DNA but not in RNA.
There is 1 question to complete.