The period of prenatal development when teratogens have their greatest impact is known as the critical period.

Question

Quizplus · Accepted Answer

The critical period is the period of prenatal development when teratogens have their greatest impact, typically occurring within the first trimester. During this time, the developing embryo or fetus is particularly vulnerable to the harmful effects of environmental toxins, viruses, and other factors that can disrupt normal growth and development. After this critical period, the fetus may still be affected by teratogens, but the degree of impact is typically less severe.

The Period of Prenatal Development When Teratogens Have Their Greatest