What was the most critical lesson about teratogens learned from studies on the use of the drug DES by pregnant women?
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

What was the most critical lesson about teratogens learned from studies on the use of the drug DES by pregnant women? ​
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.

Quizplus · Accepted Answer

Studies on the use of DES by pregnant women revealed that sometimes the effects of teratogens are not apparent until long after exposure. The daughters of women who took DES during pregnancy experienced increased rates of reproductive cancers and other health issues well into adulthood. This taught researchers and medical professionals the importance of evaluating the long-term effects of teratogens on developing fetuses.

What Was the Most Critical Lesson About Teratogens Learned from Studies