Nearly all of the major organs are formed during what period?
a. genetic
b. zygotic
c. fetal
d. embryonic
D. This period lasts from the third to eighth week after conception.
Psychology
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Since genes are known to affect the chance of neural-tube defects, pregnant women are urged to begin taking vitamins with folic acid
A. before becoming pregnant. B. as soon as they learn they are pregnant. C. during the first trimester. D. during the second trimester.
Psychology
Neural tube defects are more common in which of the following ethnic groups?
Irish, English, Egyptian Asian, African, Egyptian Western European, Egyptian, African United States, English, Irish
Psychology