An intervening section of
DNA occuring almost exclusively within a eukaryotic
gene but which is not translated to amino acid sequences in the gene product. The introns
are removed from the premature
mRNA through a process called
splicing to form an active
mRNA.
Source:
PAC, 1992, 64, 143
(Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992))
on page 158