During which period of development is the unborn baby most at risk of developing a structural defect due to the effects of a teratogen?
A) at conception
B) during the germinal period
C) during the embryonic period
D) during the fetal period

Question

Quizplus · Accepted Answer

During the embryonic period, which lasts from implantation to the end of the eighth week after conception, the major organs and body systems form. Exposure to teratogens during this period can cause serious and sometimes irreversible structural defects.

During Which Period of Development Is the Unborn Baby Most