12. Gene Regulation in Prokaryotes
Lac Operon
3:39 minutes
Problem 17e
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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