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.

A complex molecular machine, the spliceosome, ensures that the genetic information from the genome, after being transcribed ...

Scientists have discovered that some tiny segments of RNA thought to be junk instead have a functional role in suppressing production of certain messenger RNAs and appear to help cells respond to ...