In the 1950s, thalidomide was given to pregnant women to ease nausea and insomnia.What happened to some fetuses exposed to this drug?
A) Exposure in the last trimester resulted in babies missing their forebrains, a condition called anencephaly.
B) Exposure during gastrulation resulted in babies with organs on the wrong side, a condition called situs inversus.
C) Exposure in the first trimester when organs are forming resulted in babies with missing or severely malformed arms and legs.
D) Exposure during neurulation resulted in babies with regions of open neural tubes, a condition called spina bifida.
E) Exposure in the last trimester when growth is rapid resulted in babies with sleep abnormalities.
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