Which enzyme(s) will be produced in a bacterial cell in which 'UAG' is inserted in the 'lac-y gene' due to mutation ? Choose the correct option :

Question

MCQ (Single)Lac Operon Model of Gene RegulationCBSE PYQ

Explain how the addition of lactose in the medium regulates the switching on of the lac operon in bacteria.

Explain with the help of well-labelled diagrams how lac operon operates in E. coli : (i) In presence of an inducer. (ii) In absence of an inducer.