Exposure to Teratogenic Agents Is MOST Likely to Result in Spontaneous

Multiple Choice

Exposure to teratogenic agents is MOST likely to result in spontaneous abortion when the exposure occurs:

A) during the first 2 weeks after conception.
B) between 2 and 8 weeks after conception.
C) between 8 and 12 weeks after conception.
D) at any time during gestation-all periods are equally dangerous for exposure.