This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
False statement is 
Select and explain. 
A. Repressor binds operator gene, B. Regulator genes produce repressor subunits, C. IP TG is inducer but not substrate, D. Regulator gene is inducible
D: Regulator gene is inducible
Answer: D: Regulator gene is inducible 
Explanation: D i.e., Regulator gene is inducible