Question

in e.coli the lac operon get switched on when​

Answer 1

Answer:

lactose operon is an inducible operon. When the glucose level in the medium where e.coli is growing is less and when the medium has lactose the operon is switched on.

Explanation:

this is because if lactose is present in the medium it gets converted to allolactose in ecoli in presence of enzyme beta galactosidase. thus this allolactose binds to inhibitor not allowing the inhibitor to bind to the promoter.now as the promoter is free RNA polymerase binds allowing the transcription of lac z y and a genes