Respuesta :

Answer:

Allolactose

Explanation:

  • The inducer in the lac operon is allolactose. Allolactose is the inducer of lac operon since it turns on, or induces the expression of the lac genes.
  • In the presence of lactose in the medium, some amount of lactose will be converted to allolactose by the enzymes β-galactosidase present in the cell.
  • Consequently Allolactose binds to the repressor molecule, hence reducing the repressor's affinity for the operator site.