12. Gene Regulation in Prokaryotes
Lac Operon
Problem 17c
Textbook Question
Textbook QuestionIdentify which of the following lac operon haploid genotypes transcribe operon genes inducibly and which transcribe genes constitutively. Indicate whether the strain is lac⁺ (able to grow on lactose-only medium) or lac⁻ (cannot grow on lactose medium).
I⁺ P⁺ O⁺ Z⁻ Y⁺
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