RNA editing is the process of insertion, deletion or change of nucleotides on mRNA before or after transcription.()

A. Methylation of bases after transcription
B. Deamination of bases after transcription
C. Splicing of the transcription product
D. Insertion or deletion of nucleotides after transcription

A. The mechanism of alternative splicing is quite different from constitutive splicing.
B. Isoproteins can be produced from one gene.
C. Alternative splicing have different 5’ and 3’ splicing sites.
Different proteins can be produced in different tissues and different development stages.
E. It could be across exons, or involved in variable exons and retained introns

A. belongs to a protein family that have one or more arginine and serine-rich region
B. inhibit the identification and splicing of splicesome by binding to the splicing site of the intron
C. is a kind of activator of splicing.
D. is often binding to the splicing enhancer sequences of the intron.