in which exons on different pre-mRNAs are ligated together. The existence of introns and differential splicing helps explain how new genes are created during evolution. Splicing makes genes more ...

The sections of DNA (or RNA) that code for proteins are called exons. Following transcription, new, immature strands of messenger RNA, called pre-mRNA, may contain both introns and exons.

To do this, this large protein-RNA complex, which is located in the cell nucleus, removes non-coding sections (introns) from ...