Which of the following statements about brain differentiation is true according to recent findings?
A) The sexual dimorphism of the mammalian brain depends entirely on the presence or absence of testosterone; genes play no direct role.
B) The program of mammalian female brain development unfolds normally in the absence of estradiol or other hormones.
C) There is a single mechanism that accounts for all differences between the brains of male and female mammals.
D) all of the above
E) none of the above
Question 2
In the evaluation of the effects of various hormone treatments on reproductive behavior, it is important to distinguish between feminize and demasculinize because they
A) are usually the same.
B) do not always go together.
C) are the opposite of masculinize and defeminize.
D) all of the above
E) both A and B
Filter in the vena cava prevents an embolus from traveling to the heart, lungs, or brain; A, Greenfi
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