Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
A nucleotide sequence that is found in a gene, codes information for protein synthesis, and is transcribed to messenger RNA.
[ex(pressed) + -on.]
(Historical Terms) Brit one of the four officers who command the Yeomen of the Guard
[C17: a pronunciation spelling of French exempt exempt]
(Genetics) any segment of a discontinuous gene the segments of which are separated by introns. Compare intron
[C20: from ex-1 + -on]
a segment of DNA that is transcribed to RNA and specifies the sequence of a portion of protein.
[1975–80; ex(pressed sequence) + -on1]
Switch to new thesaurus
|Noun||1.||exon - sequence of a gene's DNA that transcribes into protein structures; "exons are interspersed with introns"|
deoxyribonucleic acid, desoxyribonucleic acid, DNA - (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"