Signal for ribosome to begin translating the transcript, Biology

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Which of the following serves as a signal for the ribosome to begin translating the transcript?

A. Addition of the poly a tail to the 3' end of the transcript

B. Deamination of all cytosine nucleotides to uracil

C. Addition of a methylated guanine nucleotide to the 5' end of the transcript

 


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