Over expression of InhA gene can lead to cross resistance of Isoniazid with:: (A) Rifampicin, (B) Ethambutol, (C) Ethionamide, (D) PAS
Answer is C. InhA gene overexpression can lead to cross resistance of Isoniazid with Ethionamide.
KatA gene mutation : Severe form of Isoniazid resistance.