During capping
The removal of introns and joining of exons in a defined order takes place
Adenylate residues (200-300) are added at 3'-end in a template independent manner
Addition of unusual nucleotide (methyl guanosine triphosphate) is added to the 5'-end of hnRNA
Addition of unusual nucleotide (methyl guanosine triphosphate) added to the 3'-end of hnRNA.
During capping addition of unusual nucleotide (methyl guanosine triphosphate) takes place at the 5'-end of hnRNA.