What is lac operon? Explain the functioning of lac operon when in open state.
The arrangement where a structural gene is regulated by a common promoter and regulatory genes lactose acts as inducer, binds with repressor protein, RNA polymerase.
Firstly waves over the structurak genes, transcribes lac mRNA, which in turn produce enzymes-
transcetylase, permease, galactoside (by lac z), responsible for digestion of lactose.