The embryo is most sensitive to outside influences that can cause malformations during the
A) first two weeks after fertilization.
B) third to the ninth weeks of development.
C) ninth to the sixteenth weeks of development.
D) twelfth to the twentieth weeks of development.
E) twenty-first to twenty-sixth weeks of development.

Question

Quizplus · Accepted Answer

The embryo is most sensitive to teratogens and outside influences that can cause malformations during the third to the ninth weeks of development, a period known as the embryonic period. This is when the major organs and structures of the body are forming.

The Embryo Is Most Sensitive to Outside Influences That Can