KYA2没有诱导物乳糖operon不转录加入诱导物乳糖is/l+等位基因间is>I+的显隐关系is>ic
I S p o Z Y A I + 加入诱导 物乳糖 没有诱导物乳糖， operon不转录 等位基因间 的显隐关系 i s > I + i s / I + i s > i c
oC突变丧失与repressor结合功能无论有无诱导物乳糖，operon永远开放o0+/o℃等位基因间的显隐关系
等位基因间 的显隐关系 O + / o C ? o C 突变 丧失与repressor结合功 能 无论有无诱导物乳糖， operon永远开放 o C I＋ p o c Z Y A
p没有诱导物乳糖加入诱导物乳糖cis-dominant
o C> O + 加入诱导 物乳糖 没有诱导 物乳糖 I ＋ p o Z Y A I ＋ p o c Z Y A cis-dominant
cis-dominantThe ability of a site (cis-factor) to control adjacent geneirrespective of the presence in the cell of other alleles of the sitecis acting factor对与其紧密连锁基因的控制效应不受其等位基因的影响
cis-dominant The ability of a site (cis-factor) to control adjacent gene irrespective of the presence in the cell of other alleles of the site cis acting factor 对与其紧密连锁基因 的控制效应不受其等位基因的影响
Positive-inducibleoperon（多为分解酶类I→inactiveactivatoroperon offinducerinactiveactive activator激活RNApol启动binding on frontP (activation site,AS)
inactive Positive - inducible operon (多为分解酶类) I inactive activator operon off active activator 激活 RNA pol 启动 inducer binding on front P (activation site ,AS)