Definition of Exon
Exon: The region of a gene that contains the code for producing protein. Each exon codes for a specific portion of the complete protein. Exons are separated by introns, long regions of DNA that have no apparent function.
Exons are also called coding DNA.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=3353
Last Editorial Review: 4/27/2011 5:27:15 PM
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