Structure of prokaryotic genes  1 The prokaryotic genomes have a very high gene density: on average, the proteincoding genes occupy 85% of the genome operons In addition, the prokaryotic genes are not interrupted by introns and are sometimes organized in transcriptional polycistronic units (leading information related to several genes), called operons The high plasticity of prokaryotic genomes is reflected by the fact that the order of genes along the genome is poorly conserved among different species and taxonomic groups Therefore, groups of contiguous genes contained in a single operon in a genome can be dispersed in another 17
{"Image DocumentName": "Introduction \uf02d 4", "Image ImageDescription": "However, like any other system for information storage, the genome contains signals that allow the cell to determine the beginning and the end of a gene and when/how it should be expressed. A sense must be attached to the disconcerting organization of A, T, C, and G, which is a typical raw genomic data. Finally, it is worth noting that the development of new tools for finding genes did turn our attention to before unsuspected biological mechanisms, responsible for the regulation of gene expression.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}