what is meant by capping and tailing in transcription process in eukaryotes?
the process of addion of methyl guanosine triphosphate to the 5' end of hnRNA is termed as capping
whereas addition of adenylate residues (200-300) to the 3' end of hnRNA is termed as tailing.
capping and tailing followed by splicing changes hnRNA into mRNA.