The _________ is the time when serious defects from teratogens are most likely to occur.
A) period of the zygote
B) period of the embryo
C) second trimester
D) third trimester

Question

Quizplus · Accepted Answer

The period of the embryo is from weeks 3-8 of gestation, and during this time, the major organ systems are developing. This is the time when exposure to teratogens can have the greatest impact on the developing fetus and result in serious defects. The period of the zygote is the first 2 weeks of gestation, and the embryo has not yet formed. The second trimester and third trimester are important for fetal growth and maturation, but the risk of teratogens causing serious defects is lower during these periods compared to the embryonic period.

The _________ Is the Time When Serious Defects from Teratogens