A. Gene expression. B. Transcription factor. C. Gene expression. D.Operon.,Promoter E.Lactose F.Negative regulator. G. Lactose., Promoter H. Negative regulation., Operator. I. Inducible operon., Inducer. J. .Transcription factors, lac operon, CRP-cAMP. K. Lactase,Lactose intolerent. Solution A. Gene expression. B. Transcription factor. C. Gene expression. D.Operon.,Promoter E.Lactose F.Negative regulator. G. Lactose., Promoter H. Negative regulation., Operator. I. Inducible operon., Inducer. J. .Transcription factors, lac operon, CRP-cAMP. K. Lactase,Lactose intolerent..