Imagine the following scenario: You take the regulatory region of the trp operon (including the promoter, operator, and 5' UTR)and attach it upstream of the structural genes of the lac operon.You then introduce this artificial construct into a mutant in which the lac operon is completely nonfunctional.Indicate the level of -galactosidase activity in each of the following cases and explain why you expect that level of activity:
a.No tryptophan, no lactose
b.High tryptophan, high lactose
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