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Which of the following is the unusual nucleotide that is added to the 5’-end of the hnRNA during capping?

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Which of the following is the unusual nucleotide that is added to the 5’-end of the hnRNA during capping?

(a) Methyl Guanosine Triphosphate

(b) Adenine

(c) Guanine

(d) Adenosine Triphosphate

The question was posed to me during an online exam.

My question is taken from Molecular Basis of Inheritance in section Molecular Basis of Inheritance of Biology – Class 12

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Correct answer is (a) Methyl Guanosine Triphosphate

Best explanation: In addition to the splicing process that the hnRNA undergoes, it also undergoes the processes of capping and tailing. During the process of capping, the unusual nucleotide (i.e) Methyl Guanosine Triphosphate is added to the 5’-end of the hnRNA.

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