Induction of enzymes involved in xenobiotic metabolism occurs through binding of the ligand-bound AhR to xenobiotic responsive elements in the promoters of genes for these enzymes.
This statement describes how the aryl hydrocarbon receptor (AhR) binds to specific DNA sequences called xenobiotic response elements (XREs) located within the promoter regions of genes involved in metabolizing foreign substances known as xenobiotics, ultimately leading to the activation of these enzymes.