Changes

The '''exon''' is the region of a [[gene]] that contains the code for producing the gene's [[protein]]. Each exon codes for a specific portion of the complete protein. In some species (including humans), a gene's exons are separated by long regions of [[DNA]] (called [[introns]] or sometimes "[[junk DNA]]") that have no apparent function.

The '''exon''' is the region of a [[gene]] that contains the code for producing the gene's [[protein]]. Each exon codes for a specific portion of the complete protein. In some species (including humans), a gene's exons are separated by long regions of [[DNA]] (called [[introns]] or sometimes "[[junk DNA]]") that have no apparent function.  A gene that consists of a string of exons can create several gene products or proteins by [[alternative splicing]].

== Sources ==

== Sources ==