Class 12 NEET Biology Molecular Basis of Inheritance Questions Part 1

Regulator gene is a gene whose function is to control the transcriptional activity of other genes, either adjacent or distant in the genome. In the case of the lac operon of E.coli the regulator gene lac i produces a protein product that represses the operator gene of the operon. In bacteria the same regulator gene may affect a series of non-adjacent operons.