En EspanolTalking Glossary of Genetic Terms
Elliott Margulies, Ph.D. defines Intron
Intron
IN tron
An intron is a portion of a gene that does not code for amino acids. In the cells of plants and animals, most gene sequences are broken up by one or more introns. The parts of the gene sequence that are expressed in the protein are called exons, because they are expressed, while the parts of the gene sequence that are not expressed in the protein are called introns, because they come in between the exons.
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