Lac operon: The lac operon consists of

The lac operon consists of three genes each involved in processing the sugar lactose One of them is the gene for the enzyme β‐ galactosidase This enzyme hydrolyses lactose into glucose and galactose Learn about the lac operon , its structure, role, and example for quick understanding. Key for Class 12 biology students. Learn about the lac operon , a group of genes involved in lactose metabolism in bacteria. Find out how it is regulated by lactose, glucose, and other factors, and see diagrams of its structure and function. Lac operon definition The lactose or lac operon of Escherichia coli is a cluster of three structural genes encoding proteins involved in lactose metabolism and the sites on the DNA involved in the regulation of the operon .