e) Constitutive transcription. The abberated Lac repressor does not bind to the promoter region of the operon. Thus leads to binding of the RNApolymerase and Constitutive expression of the operon Solution e) Constitutive transcription. The abberated Lac repressor does not bind to the promoter region of the operon. Thus leads to binding of the RNApolymerase and Constitutive expression of the operon.