This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Splicing is a process of ? 
Select and explain. 
A. Activation of protein, B. Removal of introns, C. Synthesis of protein, D. Replication of DNA
B: Removal of introns
Answer: B: Removal of introns 
Explanation: In molecular biology and genetics, splicing is a modification of an RNA after transcription, in which introns are removed and exons are joined.This is needed for the typical eukaryotic messenger RNA before it can be used to produce a correct protein through translation.For many eukaryotic introns, splicing is done in a series of reactions which are catalyzed by the spliceosome a complex of small nuclear ribonucleoproteins (snRNAs), but there are also self-splicing introns.