Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Tandem exon duplication
open-in-new
<p>Tandem exon duplication is defined as duplication of <a href="/facts/Exon/8KWJtLuN">exons</a> within the same <a href="/facts/Gene/e1swwPY6">gene</a> to give rise to the subsequent exon. A complete exon analysis of all genes in <i><a href="/facts/Homo_sapiens/rlcTENsr">Homo sapiens</a></i>, <i><a href="/facts/Drosophila_melanogaster/KtnHVCcB">Drosophila melanogaster</a></i>, and <i><a href="/facts/Caenorhabditis_elegans/XJVJzPn2">Caenorhabditis elegans</a></i> has shown 12,291 instances of tandem duplication in exons in <a href="/facts/Human/rlcTENsr">human</a>, <a href="/facts/Fly/ugzGBFKG">fly</a>, and <a href="/facts/Worm/FMrnWM8s">worm</a>. Analysis of the <a href="/facts/Intron/LS6YdBEK">intronic</a> region has produced further 4,660 unidentified duplicated exons referred to as unannotated exons. 1,578 of these unannotated exons contained <a href="/facts/Stop_codon/1yuAkq9X">stop codons</a> thus not considered potential exons. 35.1% of the unannotated exons were found in the <a href="/facts/Expressed_sequence_tag/yS3x0IvH">EST</a> sequence thus confirming the potential of the presence of these exons in <a href="/facts/Protein/Jxmagu3E">protein</a> transcripts. </p>