noun, plural: exons
Genes contain exons which are regions coding for proteins and which are interrupted by the unused sequences called introns. Exons have been found to include both sequences coding for amino acids and untranslated sequences. The introns are removed and the exons are joined together to form the final functional mRNA.
User Contributions / Comments:
- The base sequences that appear in eukaryotic DNA and are used to make mRNA for a specific protein are the exons of a gene.