A Poly A base sequence would be most likely found at the
Correct Answer: 3' end of a eukaryotic mRNA
Description: The addition of a poly A tail to the 3' end is one of the post-transcriptional modifications that occurs in the processing of eukaryotic messenger RNA (mRNA). A cap consisting of a guanosine derivative is attached to the 5' end. Intervening sequences (introns) are removed by splicing. All of these processing events occur in the nucleus of eukaryotes. Prokaryotic mRNA undergoes none of these modifications.
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