Use this information to answer the question(s) below.
-If she moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following would be likely?
A) The three structural genes will be expressed normally.
B) RNA polymerase will no longer transcribe permease.
C) The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated.
D) Beta galactosidase will not be produced.
E) The cell will continue to metabolize but more slowly.

Question

Quizplus · Accepted Answer

Moving the promoter between lacZ and lacY genes will interrupt the transcription of the beta galactosidase (lacZ) gene, as the gene will no longer be under control of the promoter. This means that beta galactosidase will not be produced. The other genes in the operon (lacY and the regulatory gene lacI) should still be transcribed normally.

Use This Information to Answer the Question(s) Below