The time of rapid growth of an organ system is called its _____ period.
a. critical
b. germinal
c. resilience
d. prenatal
Question 2
Which of the following is true?
a. The quality of a postnatal environment has little impact on the effect of a teratogen.
b. The genetic makeup of a fetus can influence the impact of a teratogen.
c. The effects of a teratogen do not appear to be related to the dose received.
d. An organ system is least vulnerable to the effects of a teratogen when it is developing rapidly.