What would likely result from a mutation in the promoter for lac operon structural genes that increased the number of RNA polymerase molecules that bind to the DNA?

A. lacI protein production would increase.
B. Lactose would be metabolized much faster.
C. Polycistronic mRNA production would increase.
D. Lactose would be metabolized much slower.
E. Repression at the lacO site would not be reduced but expression would increase regardless.


Answer: E

Biology & Microbiology

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