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A segment of a gene situated between exons that is removed before translation of messenger RNA and does not function in coding for protein synthesis.

[intr(agenic), occurring within a gene (intra- + genic) + -on.]


(Genetics) biochem a stretch of DNA that interrupts a gene and does not contribute to the specification of a protein. Compare exon2
[C20: from intr(agenic) (regi)on]


(ˈɪn trɒn)

a noncoding segment in DNA that interrupts a gene-coding sequence or nontranslated sequence. Compare exon.
[1975–80; perhaps intr (o)- + -on1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.intron - sequence of a eukaryotic gene's DNA that is not translated into a protein
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"
coding DNA, exon - sequence of a gene's DNA that transcribes into protein structures; "exons are interspersed with introns"
References in periodicals archive ?
Electropherogram showed that both mother and father were heterozygous (carrier) for intervening sequence I-5 mutation whereas the affected child was homozygous for this mutation.
To confirm the pathogen as Fusarium oxysporum species, 16S rDNA intervening sequence specific ITS FU F (5' CAACTCCCAAACCCCTGTGA 3') and ITS FU R (5' GCGACGATTACCAGTAACGA 3') primers were used to get an amplicon of 389 bp size (19).
827 IVS: Intervening sequence N= Number of Control and Patients.