Intron Loss and Gain
Published Online: 21 DEC 2007
Copyright © 2001 John Wiley & Sons, Ltd. All rights reserved.
How to Cite
Mourier, T. and Jeffares, D. C. 2007. Intron Loss and Gain. eLS. .
- Published Online: 21 DEC 2007
Introns, the nonprotein coding regions of genes that are interspersed between protein-coding exons are present in all eukaryotes' genomes. The variation in intron abundance in eukaryotic genomes signifies that intron loss and intron gain have occurred at varying degrees during the evolution of eukaryotes. Intron gain or loss events have been rare in human and other mammalian genomes, but intron loss in other eukaryotes is starting to be understood in terms of the biology of genomes.