Sequence of a gene containing coded information for protein processing. Genes are DNA sequences of chromosomes present in the nucleus of cells. The genome or set of genes has the genetic information of a living being. The exoma is the set of exons of the genome genes. All are technical terms of biogenetics developed mainly in the twentieth century and on that path we continue in the 21st century. The term exon was coined by biochemist Walter Gilbert in the 1970s.