Which of the following statements is TRUE of the influence of teratogens on prenatal development?

Question

Quizplus · Accepted Answer

The timing of exposure to a teratogen is important, as different organs and structures develop at different times during prenatal development. For example, exposure to a teratogen during the embryonic period (weeks 3-8) is particularly critical because this is when the major organ systems are developing. On the other hand, exposure during the fetal period (weeks 9-birth) is less likely to cause major structural defects but may still have more subtle effects on brain development, for example. Therefore, the timing of exposure is important in determining the degree of harm caused by a teratogen.

Which of the Following Statements Is TRUE of the Influence