▁in ▁the ▁US ▁television ▁soap ▁opera ▁As ▁The ▁World ▁Turn s ▁ ▁Colonel ▁Kevin ▁A . ▁Davis , ▁ple aded ▁guilty ▁to ▁taking ▁b rib es , ▁see ▁C ocker ham ▁b ri ber y ▁case ▁ ▁Kevin ▁Davis ▁( author ), ▁author ▁of ▁The ▁Bra in ▁Def ense , ▁see ▁Helen ▁S . ▁May berg ▁ ▁Kevin ▁Davis ▁( g ymn ast ) ▁( born ▁ 1 9 6 6 ), ▁American ▁Olympic ▁g ymn ast ▁ ▁See ▁also ▁Kevin ▁Dav ies ▁( disambiguation ) <0x0A> </s> ▁The ▁Brit ten – David son ▁model , ▁also ▁known ▁as ▁the ▁gene - b atter y ▁model , ▁is ▁a ▁hypothesis ▁for ▁the ▁reg ulation ▁of ▁protein ▁synth esis ▁in ▁e uk ary otes . ▁Pro posed ▁by ▁Roy ▁John ▁Brit ten ▁and ▁Eric ▁H . ▁David son ▁in ▁ 1 9 6 9 , ▁the ▁model ▁post ul ates ▁four ▁classes ▁of ▁DNA ▁sequence : ▁an ▁integr ator ▁gene , ▁a ▁producer ▁gene , ▁a ▁re ceptor ▁site , ▁and ▁a ▁sensor ▁site . ▁The ▁sensor ▁site ▁regul ates ▁the ▁integr ator ▁gene , ▁responsible ▁for ▁synth esis ▁of ▁activ ator ▁R NA . ▁The ▁integr ator ▁gene ▁cannot ▁synth es ize ▁activ ator ▁R NA ▁unless ▁the ▁sensor ▁site ▁is ▁activ ated . ▁Activ ation ▁and ▁de activ ation ▁of ▁the ▁sensor ▁site ▁is ▁done ▁by ▁external ▁stim uli , ▁such ▁as ▁h orm ones . ▁The ▁activ ator ▁R NA ▁then ▁bind s ▁with ▁a ▁nearby ▁re ceptor ▁site , ▁which