gene regulationekaryotic gene regulationDNA chromatinregulation epigeneticrsinechangestogenes2h iiiiiiiiiiiiiiiiiiii.it.EE iiiii.iiiii ncondesia wontanowtranscription mic ieg i ii.neuchromatinifeng.gg1 eg inactivation DnaRnaproteinacylationadditionofacetylgrouptoallowgeneexpression typeofsmanregulatoryrnasthatbindtomrnaprokaryote gene regulation E coliafinducableoperonturnedoffunlessneededfÉfffÉffiffiffhfffÉf.fi mnit it t.s.uaglucose.ttiiiiiii ansrooseriiitryptophanoperonsrepressibleoperon turned unlessnotneededEE i i i i into.mniiEiifi f reregiIggi inquireiftryptophanisassent moterBEPacorepressorres.EEiiiiEi constitutive housekeepinggene alwaysoninduciblegene canbeturned onoffmeat regulatorygene repressors or activator TFfEspromoteregtata