Knockout Experiments Concerning Pheromone Receptors in the Vomeronasal Organ (VNO)

Multiple Choice

Knockout experiments concerning pheromone receptors in the vomeronasal organ (VNO) of mice have revealed that

A) there is a single gene controlling mating behavior in mice.
B) VNO receptors are necessary for a male mouse to identify whether another mouse is male or female.
C) mating behavior in male mice requires VNO receptors.
D) a male mouse without VNO receptors is aggressive toward other males.
E) a normal male mouse with VNO receptors will attempt to mate with another male.