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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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barry barry
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11 years ago
If the mother is exposed to teratogens during pregnancy, what can happen to the fetus?
A) These substances are immediately toxic to a fetus.
B) These substances can cross the placental barrier to cause damage to the fetus.
C) These substances dramatically reduce the blood supply that flows through the placenta and thus injure the fetus.
D) These substances interfere with the development of the extraembryonic membranes that support the fetus.
E) None of the answers are correct.
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#1
11 years ago
Answer:  B
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