When do bacteria NOT produce beta-galactosida | vedclass

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(B) In the $lac$ operon system,the enzyme $\beta$-galactosidase is encoded by the $lacZ$ gene. This gene is part of an inducible operon system. In the

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Absence of lactose

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(B) In the $lac$ operon system,the enzyme $\beta$-galactosidase is encoded by the $lacZ$ gene. This gene is part of an inducible operon system. In the absence of lactose (the inducer),the repressor protein binds to the operator region,preventing $RNA$ polymerase from transcribing the structural genes ($lacZ$,$lacY$,and $lacA$). Therefore,$\beta$-galactosidase is not produced when lactose is absent.

When do bacteria $NOT$ produce $\beta$-galactosidase?

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