Teratogens are most damaging to organ systems if exposure to them occurs
A) early in pre-embryonic development.
B) when the organ systems are undergoing peak development in the embryo.
C) in the fetal period, after systems have formed but have not completed maturation.

Question

Quizplus · Accepted Answer

Teratogens are most damaging during the embryonic period when organ systems are undergoing peak development, as this is when the foundations of the organs are being established and are most vulnerable to disruption.

Teratogens Are Most Damaging to Organ Systems If Exposure to Them