An infant born to an alcoholic mother had microcephaly and cardiac abnormalities and died despite resuscitative efforts. During which of the following periods of pregnancy is alcohol most teratogenic?

An infant born to an alcoholic mother had microcephaly and cardiac abnormalities and died despite resuscitative efforts. During which of the following periods of pregnancy is alcohol most teratogenic?



(A)First 2 weeks
(B)Third through ninth weeks
(C)Ninth through twelfth weeks
(D)Twelfth through sixteenth weeks
(E)Sixteenth through twentieth weeks

Answer: (B)Third through ninth weeks