The critical period of development during which exposure to ________ organizes male and female sexual behavior in rats during adulthood is ________.
A) estrogen; just after conception
B) androgens; shortly after birth
C) estrogen; during the estrous cycle
D) androgens; during the estrous cycle
E) progesterone; shortly after birth
Question 2
The principle that best describes an organizational effect of androgens that prevents an animal from showing female sexual behavior during adulthood is
A) aromatization.
B) masculinization.
C) behavioral masculinization.
D) feminization.
E) behavioral defeminization.
Megazostrodon, the first known mammal of the Triassic period.
A male and female fat-tailed gerbil (Pachyuromys duprasi)
Cortical Development
The karyotype of an XYY male. Affected individuals are usually taller than normal, and some, but not
Stages of development in vertebrates.