Question

Identify the event that would occur in 'lac operon' of E. coli when the growth medium has high concentration of lactose.

Options

• The repressor protein binds to RNA polymerase and prevents translation.

• The structural genes fail to produce polycistronic RNA.

• The inducer molecule binds to repressor protein and RNA polymerase binds to promoter sequence.

• The repressor protein attaches to the promoter sequence and derepresses the operator.

Answer 1

The inducer molecule binds to repressor protein and RNA polymerase binds to promoter sequence.