Question

A mutant strain of E. coli produces ?-galactosidase in the presence and in the absence of lactose. Where in the operon might the mutation in this strain occur and why? in the lacI gene, which leads to an inactive lac repressor in the promoter region of the operon, where the mutation leads to the failure of the RNA polymerase to bind to the promoter in the operator region, where the mutation leads to the failure of the operator to normally bind the repressor near the lacI gene, where the mutation leads to increased levels of lac repressor being made in the operator region, which leads to increased binding of the lac repressor to the operator

          A mutant strain of E. coli produces ?-galactosidase in the presence and in the absence of lactose. Where in the operon might the mutation in this strain occur and why?

in the lacI gene, which leads to an inactive lac repressor
in the promoter region of the operon, where the mutation leads to the failure of the RNA polymerase to bind to the promoter
in the operator region, where the mutation leads to the failure of the operator to normally bind the repressor
near the lacI gene, where the mutation leads to increased levels of lac repressor being made
in the operator region, which leads to increased binding of the lac repressor to the operator

A mutant strain of E. coli produces ?-galactosidase in the presence and in the absence of lactose. Where in the operon might the mutation in this strain occur and why?

in the lacI gene, which leads to an inactive lac repressor
in the promoter region of the operon, where the mutation leads to the failure of the RNA polymerase to bind to the promoter
in the operator region, where the mutation leads to the failure of the operator to normally bind the repressor
near the lacI gene, where the mutation leads to increased levels of lac repressor being made
in the operator region, which leads to increased binding of the lac repressor to the operator

Added by Brandon D.

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