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.
Question 2
Which of the following conditions will block or diminish female rodent sexual behavior?
A) damage to the lateral thalamus
B) being in a nonestrous state
C) targeted mutations of ghrelin receptors
D) genetic ablation of the SRy gene.
E) administration of estradiol followed by progesterone.
Gorillas live in one-male or multimale groups, from which females emigrate at sexual materity.
Margaret Sanger, birth control pioneer.
Birth Order and Intelligence
(A) Dilation stage: uterine contractions cause dilation of the cervix; (B) expulsion stage: birth, ...
Relationship between birth weight and mortality in humans