Question

In the processing of eukaryotic mRNA, during protein synthesis, tailing involves .......... of RNA.

• A. Addition of adenylate residues at $3^{\prime }$ end
• B. Addition of methyl guanosine triphosphate at $3^{\prime }$ end
• C. Addition of methyl guanosine triphosphate at $5^{\prime }$ end
• D. Removal of introns

Answer 1

The correct option is A Addition of adenylate residues at $3^{\prime }$ end

In the processing of eukaryotic mRNA, during protein synthesis, a poly (A) tail is added to the 3' end of the pre-mRNA once elongation is complete. The poly (A) tail protects the mRNA from degradation, aids in the export of the mature mRNA to the cytoplasm, and is involved in binding proteins involved in initiating translation.

So, the correct answer is option A.