The period of pregnancy that contains the clearest examples of critical periods is the __________ period.
A)germinal
B)embryonic
C)fetal
D)gestational

Question

Quizplus · Accepted Answer

The embryonic period, which lasts from fertilization to week 8 of gestation, is the period during which critical periods occur. Critical periods are specific periods of development during which environmental factors can have long-lasting effects on the developing organism. During the embryonic period, organs and body systems are forming, and exposure to teratogens (substances that cause birth defects) during this time can lead to structural abnormalities and other developmental problems.

The Period of Pregnancy That Contains the Clearest Examples of Critical