The Table Below Lists Several Genotypes Associated with the Lac

question 30

Essay

The table below lists several genotypes associated with the lac operon in E.coli.For each,indicate with a "+" or a
"-" whether functional fi- galactosidase would be expected to be produced at induced levels. I⁺ = wild- type repressor
I^- = mutant repressor unable to bind to the operator)
I^s = mutant repressor insensitive to lactose)
O⁺ = wild- type operator
O^c = constitutive operator insensitive to repressor)

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