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Exon

Definition

Sequence retained in a mature transcript, which may be coding or untranslated. A transcript is an RNA product of transcription. Not every exon directly encodes protein. Changes in transcript abundance or structure also require assay-specific interpretation.

Context
Gene expression

For example, sequence retained in a mature transcript may be untranslated rather than part of the protein-coding reading frame.

Related terms

Chromosome
A chromosome is an organised DNA-containing structure that carries genetic information through a cell lineage. In typical human nucleated cells, nuclear chromosomes...
Gene
A gene is a genomic region contributing to a functional product, such as a protein or RNA, within a biological expression system....
Heterozygosity
The probability that two alleles chosen at random from a population at a given locus are different. A locus with heterozygosity approaching...
Locus
A locus is a specified position or region within a genome used to describe or examine genetic information. Different loci can contain...

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