Kutevera kwaJacob naMonod's 1961 Journal of Molecular Biology bepa "Genetic regulatory mechanisms in the synthesis of proteins", McClintock akanyora chinyorwa cheAmerican Naturalist achienzanisa iyo lac operon nebasa rake rekudzora zvinhu zviri muchibage. Kunyangwe mukupera kwezana ramakumi maviri, mupiro waMcClintock kuchirwere hauna kubvumidzwa zvakanyanya sekunge kuwanikwa kwekudzora kweiyo genetic. McClintock akaverengerwa zvakanyanya nekutsvaga kwekutsvaira kwekutsvaira mushure mekunge vamwe vaongorori vakawana maitiro ekushandura lac operon mubhakitiriya, mbiriso, uye maSpanish mabhakitiriya mukutanga kwema1951. Munguva yekupedzisira ye1970s uye nekutevera kwaJacob naMonod's 1961 Journal of Molecular Biology bepa "Genetic regulatory mechanisms in the synthesis of proteins", McClintock akanyora chinyorwa cheAmerican Naturalist achienzanisa iyo lac operon nebasa rake rekudzora zvinhu zviri muchibage. Kunyangwe mukupera kwezana ramakumi maviri, mupiro waMcClintock kuchirwere hauna kubvum
transposon