In general, the greatest vulnerability to teratogens occurs during the_____ period of prenatal development.
A)fertilization
B)embryonic
C)zygotic
D)germinal

Question

Quizplus · Accepted Answer

The embryonic period is the time from approximately 2-8 weeks after fertilization when the major organs and body systems begin to form. During this period, the developing organism is most vulnerable to the effects of teratogens, which can cause structural abnormalities or functional deficits in these critical systems. The germinal period (the first 2 weeks after fertilization) and zygotic period (the first few hours after fertilization) are not as susceptible to teratogenic effects since the developing organism has not yet begun to differentiate into specialized cells and structures.

In General, the Greatest Vulnerability to Teratogens Occurs During The_____