Which description describes a teratogen?

Which description describes a teratogen?

• A. A substance that irritates the skin on contact
• B. A substance that can cause cancer
• C. A substance that can cause developmental abnormalities in fetuses
• D. A substance that reduces blood sugar

Answer: (C)

Teratogens are substances that can cause developmental abnormalities in a fetus. Exposure during pregnancy, especially during critical periods of organ formation, can lead to birth defects or other developmental problems in the unborn child. So the description that fits is a substance that can cause developmental abnormalities in fetuses. The other options describe a skin irritant, a cancer-causing agent, or a substance that lowers blood sugar—none of which specifically refer to fetal development.

Teratogens are substances that can cause developmental abnormalities in a fetus. Exposure during pregnancy, especially during critical periods of organ formation, can lead to birth defects or other developmental problems in the unborn child. So the description that fits is a substance that can cause developmental abnormalities in fetuses. The other options describe a skin irritant, a cancer-causing agent, or a substance that lowers blood sugar—none of which specifically refer to fetal development.