The times when developing structures in the embryo are most prone to damage by environmental events are called
A) organogenesis.
B) teratogens.
C) critical periods.
D) differentiation.
Correct Answer:
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Q47: At approximately _ pounds, the fetus may
Q48: During weeks 28 through 40, the fetus
Q49: At its peak during the fetal stage,
Q50: "Cephalo" and "caudal" bear the same relation
Q51: In prenatal development, the heart tissue forms
Q53: The process in organ formation where each
Q54: When organogenesis is complete, the organism is
Q55: As many as _ of all birth
Q56: The amniotic fluid buffers the developing child
Q57: Teratology is the study of teratogens, which
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