Which of the following would you expect to find in an inducible system?
A repressor protein, which is bound to $DNA$ in absence of any other factor.
A repressor protein, which is bound to $DNA$ in the presence of a corepressor.
An activator protein, which is bound to $DNA$ in the absence of any other factor.
An activator protein, which is bound to $DNA$ only in the absence of air inhibitor.
Which enzyme / enzymes are responsible for transformation of lactose to galactos in the E.coli culture medium.
Write short note on lac operon
An environmental agent that triggers transcription from an operon is a:
$A$ : Operator gene is functional when it is not blocked by repressor.
$R$ : Regulator gene produces active protein only which acts on operon system in $E$.coli
Lactose operon produces enzymes