exons

Coding regions of messenger RNA included in the genetic transcript which survive the processing of RNA in cell nuclei to become part of a spliced messenger of structural RNA in the cytoplasm. They include joining and diversity exons of immunoglobulin genes. ... (12 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973

Exons

Portion of a gene included in the transcript of a gene and survives processing of the rna in the cel
Found on http://www.encyclo.co.uk/local/22391

exons

The protein- coding DNA sequences of a gene. Compare introns.
Found on http://linkage.rockefeller.edu/wli/glossary/genetics.html

Exons

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 cats) a gene's exons are separated by long regions of DNA (named introns) that have no apparent function. See Introns.
Found on http://www.cat-world.com.au/glossary
No exact match found