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.
Male giraffes will engage in necking to establish dominance.
Male Reproductive System - Testes ذكر الجهاز التناسلي - الخصيتين
Male Reproductive System - Ejaculatory ducts
The traditional human karyotypes derived from a normal female and a normal male
Male to Female Sex Ratio at Birth vs. PCB Concentration in Maternal Serum
Human Aneuploidies and Frequencies at Birth