has disposition at all times material entity gene A gene is a material entity that represents the entire DNA sequence required for synthesis of a functional protein or RNA molecule. Oliver He WEB: http://www.ncbi.nlm.nih.gov/books/NBK21640/ In addition to the coding regions (exons), a gene includes transcription-control regions and sometimes introns. Although the majority of genes encode proteins, some encode tRNAs, rRNAs, and other types of RNA. gene disposition