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A nucleotide sequence that is found in a gene, codes information for protein synthesis, and is transcribed to messenger RNA.
[ex(pressed) + -on.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a segment of DNA that is transcribed to RNA and specifies the sequence of a portion of protein.
[1975–80; ex(pressed sequence) + -on1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|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"
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