Facial expression of emotions is controlled by the

A split-brain patient is asked to stare at a spot on a screen. The word base appears to the left of the spot; the word ball appears to the right of the spot. What will the patient say he saw?

a) I see the word ball. b) I see the word base. c) I see the word baseball. d) I cannot see anything at all.

What is the function of the protein, H-Y antigen?

a) molding undifferentiated gonadal tissue into a testis b) molding undifferentiated gonadal tissue into an ovary c) altering gene structures so gonadal tissue can become either male or female d) altering sex chromosomes so gonadal tissue can become either male or female