Non-coding, intervening sequences of DNA that are transcribed, but are removed from within the primary gene transcript and rapidly degraded during maturation of messenger RNA. Most genes in the nuclei of eukaryotes contain introns, as do mitochondrial and chloroplast genes.
Segment of a gene that is transcribed but then removed from the primary transcript by splicing and so is not present in the mature mRNA product. Non-coding sequence of DNA between exons.
A (intervening sequence) segment of deoxyribonucleic acid (DNA) that is transcribed, but is removed from within the transcript by splicing together the sequences (exons) on either side of it (in the molecule). It is generally considered a nonfunctioning portion of the molecule.
The sequences of bases in a gene that are transcribed but removed during RNA editing.