In typical prenatal development,
a. male embryos look very different from female embryos, beginning 2 weeks after conception.
b. prenatal hormone levels are very different for males and females, beginning 1 month after conception.
c. the internal reproductive system develops prior to the external genitals.
d. almost all components of the reproductive system develop during the last 6 weeks before birth.
Question 2
In typical prenatal development,
a. the same two sets of ducts develop into a female reproductive system in females and a male reproductive system in males.
b. the sex glands (gonads) of males and females look substantially different from each other within 2 weeks after conception.
c. Mllerian ducts are transformed into the female reproductive system by the presence of androgen.
d. the reproductive system develops only during the final month of gestation.
Welwitschia-mirabilis-female
The underside of a male (top) and a female (bottom) individual of Pachygrapsus marmoratus, showing t
(A) The structure of a neuron, showing the dendrites, nerve cell body, and axon. (B) Photomicrograph
Gray Matter Development over the Surface of the Cortex
Embryonic development of shepherd’s purse (Capsella), a eudicot
Comparison of Vertebrate Embryos