Question

explain the role of regulatory gene in a lac operon .why is regulation of lac operon called negative regulation

Answer 1

Answer:

In negative inducible operons, a regulatory repressor protein is normally bound to the operator, which prevents the transcription of the genes on the operon. ... This allows for expression of the operon. The lac operon is a negatively controlled inducible operon, where the inducer molecule is allolactose.

Explanation:

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