intron
[ in-tron ]
/ ˈɪn trɒn /
noun Genetics.
a noncoding segment in a length of DNA that interrupts a gene-coding sequence or nontranslated sequence, the corresponding segment being removed from the RNA copy before transcription.
Also called
intervening sequence.
Compare
exon2.
Words nearby intron
Definition for intervening sequence (2 of 2)
British Dictionary definitions for intervening sequence
intron
/ (ˈɪntrɒn) /
noun
biochem
a stretch of DNA that interrupts a gene and does not contribute to the specification of a protein
Compare exon 2
Word Origin for intron
C20: from
intr (
agenic) (
regi)
on
Medical definitions for intervening sequence
intron
[ ĭn′trŏn ]
n.
A segment of a gene situated between exons that does not function in coding for protein synthesis.
Scientific definitions for intervening sequence
intron
[ ĭn′trŏn ]
A segment of a gene situated between exons that does not function in coding for protein synthesis. After transcription of a gene to messenger RNA, the transcriptions of introns are removed, and the exons are spliced together by enzymes before translation and assembly of amino acids into proteins. Compare exon.
Cultural definitions for intervening sequence
intron
A stretch of DNA in a gene that does not code for proteins. In eukaryotes, introns in a given gene separate stretches of DNA that contain instructions for constructing proteins. (Compare exon.)