In the lac operon, what would be the effect of a mutation in the 'i' gene (repressor gene) that prevents the repressor from binding to the operator region?
- AThe structural genes (Z, Y, A) would be constitutively expressed, even in the absence of lactose.
- BThe structural genes would only be expressed in the presence of lactose.
- CThe structural genes would never be expressed.
- DThe repressor protein would bind more strongly to the operator.
✓ Correct answer: A
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