question_answer

Which of the following events would occur in 'Lac operon' of E. coli when the growth medium has high concentration of lactose?

A) The represser protein attaches to the promoter sequence and derepresses the operator

B) The structural genes fail to produce polycistronic mRNA

C) The inducer molecule binds to represser protein and RNA polymerase binds to promoter sequence

D) The represser protein binds to RNA polymerase and prevents translation