What was the most critical lesson about teratogens learned from the use of the drug DES?
A) Sometimes what appear to be teratogens actually are harmless drugs.
B) Infants in the late fetal period appear to be the most at-risk for impact from drug-related teratogens.
C) Sometimes the effects of teratogens are not apparent until long after exposure.
D) Females appear to be at much greater risk from teratogens.

Question

Quizplus · Accepted Answer

DES (diethylstilbestrol) was a drug given to pregnant women in the mid-20th century to prevent miscarriage. Later, it was discovered that exposure to DES in utero was linked to a variety of health issues, including reproductive abnormalities and cancer, which often did not manifest until years or even decades after exposure. This highlights the critical lesson that the effects of teratogens may not be immediately apparent and can have long-term consequences. Thus, option C is the correct choice.

What Was the Most Critical Lesson About Teratogens Learned from the Use