Question: The lac operon contains three genes: lacZ, lacY, and lacA (for beta-galactosidase, galactoside pe…
Show transcribed image text The lac operon contains three genes: lacZ, lacY, and lacA (for beta-galactosidase, galactoside permease, and thiogalactoside transacetylase, respectively). The operon also contains a promoter site and an operator site. The lac operon undergoes negative regulation. In the normal condition, the Lac repressor protein is active. Allolactose, an isomer of lactose, is the signal molecule that binds to the Lac repressor. Determine which events will increase the concentration of gene products and which will decrease the concentration of lac gene products.
The lac operon contains three genes: lacZ, lacY, and lacA (for beta-galactosidase, galactoside permease, and thiogalactoside transacetylase, respectively). The operon also contains a promoter site and an operator site. The lac operon undergoes negative regulation. In the normal condition, the Lac repressor protein is active. Allolactose, an isomer of lactose, is the signal molecule that binds to the Lac repressor. Determine which events will increase the concentration of gene products and which will decrease the concentration of lac gene products.
