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.
Some male birds and mammals congregate in communal courting grounds called leks.
Male and female roe deer
Comparison of (a) male and female skulls and (b) male and female pelves.
You have four guinea pigs for a genetic study. One male and one female are from a strain that ...
The traditional human karyotypes derived from a normal female and a normal male
Structure of a mature sperm, a male gamete.