Definition of intron in English:

intron

Line breaks: in¦tron
Pronunciation: /ˈɪntrɒn
 
/

noun

Biochemistry
A segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes. Compare with exon1.
More example sentences
  • First, many heterochromatic genes have large introns relative to the genome as a whole.
  • The coding region is interrupted by several synthetic introns to improve gene expression.
  • This finding is the first suggestion that multiple spliceosomal introns occur in ribosomal genes.

Origin

1970s: from intra- 'within' + -on.

Derivatives

intronic

adjective
More example sentences
  • The upper band is amplified genomic DNA containing the intronic sequence.
  • Even though there was a certain amount of intra-allelic variation in intronic and third codon positions, an allele-specific DNA consensus sequence could be easily deduced.
  • In the GART locus, however, simultaneous transcription of the purine gene and the intronic gene seems possible.

Definition of intron in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal