but occasionally trans-splicing occurs, in which exons on different pre-mRNAs are ligated together. The existence of introns and differential splicing helps explain how new genes are created ...

To explore the evolution and function of introns in eukaryotes ... had unequivocal alternative splicing events, with cryptic exons, 5′ exon extensions and 3′ exon extensions occurring in ...

During splicing, introns are excised, and exons are joined together to form a mature mRNA molecule. The splicing process is essential for generating functional mRNA and producing diverse protein ...

Continuing with the analogy, the cell makes a pre-mRNA necklace with beads (exons) interspaced with string (introns). Next, from the pre-mRNA necklace the cell makes an mRNA necklace by splicing ...

As its name suggests, splicing involves snipping out certain sequences in the RNA called introns, with the remaining sequences (exons) reconnected to one another to form the functional molecule.