A. lactose levels are high and glucose levels are low
Explanation:
Lac operon :
It is a operon that is regulated by a set of genes and is regulated altogether and is transcribed into a single RNA in the presence of lactose.
It is mainly found in E.coli. Lac operon is mainly used for lactose metabolism. There are 3 genes in this system - lacZ, lacY, and lacA.
LacZ codes for β-galactosidase which cleaves lactose into glucose and galactose. LacY codes for Beta-galactoside permease, which helps in the entry of lactose in the cell. LacA codes for Galactoside acetyltransferase.
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