+An exon is a crucial segment within a [Gene](/wiki/Gene), carrying the instructions to construct a [Protein](/wiki/Protein). Unlike introns, these coding regions are retained and expressed in the final messenger RNA molecule.
+## See also
+- [mRNA](/wiki/mRNA)
+- [Introns](/wiki/Introns)
+- [RNA Splicing](/wiki/RNA_Splicing)
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