noun
- a segment of DNA that codes for proteins and is expressed in the final RNA product
Usage: biology; genetics
Examples
- The gene contains five exons separated by introns.
- During RNA processing, exons are joined together while introns are removed.
- Scientists identified a mutation in the third exon of the gene.
- Alternative splicing can include or exclude certain exons.
- The protein-coding sequence is made up of multiple exons.
- Exon skipping is a potential therapeutic approach for genetic diseases.