A male rat is castrated immediately after birth and then given injections of estradiol and progesterone in adulthood. This male rat would be expected to
A) exhibit enhanced inter-male aggression.
B) attempt to copulate with a female in heat.
C) show lordosis in response to another male.
D) attempt to copulate with a nonestrous female.
E) show maternal aggression.
Answer: C
Rationale: A male rat is castrated immediately after birth and then given injections of estradiol and progesterone in adulthood. This male rat would be expected to show lordosis in response to another male.
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