What would be the best candidate to modify (mutate or knock-out) in transgenic mice in order to study various strengths of efferent inhibition of the cochlea?

Question

Quizplus · Accepted Answer

Cholinergic receptors (subunits) at efferent synapses onto the outer hair cells are directly involved in the efferent inhibition of the cochlea, making them the best candidates for modification to study this process.

What Would Be the Best Candidate to Modify (Mutate or Knock-Out)