Question

What is the definition of exon in biology?

Answer 1

exon is any nucleotide sequence encoded by a gene that remains present within the final mature RNA product of that gene after introns have been removed by RNA splicing. The term exon refers to both the DNA sequence within a gene and to the corresponding sequence in RNA transcripts.

Answer 2

Exon is a region of a reproduced gene already in the final utilitarian RNA molecules.