With regard to prenatal genetic testing, nurses should be aware that:
a. Maternal serum screening can determine whether a pregnant woman is at risk of carrying a fetus with Down syndrome.
b. Carrier screening tests look for gene mutations of people already showing symptoms of a disease.
c. Predisposition testing predicts with near certainty that symptoms will appear.
d. Presymptomatic testing is used to predict the likelihood of breast cancer.
A
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A Maternal serum screening identifies the risk for the neural tube defect and the specific chromosome abnormality involved in Down syndrome.
B Carriers of some diseases such as sickle cell disease do not display symptoms.
C Predisposition testing determines susceptibility such as for breast cancer; presymptomatic testing indicates that, if the gene is present, symptoms are certain to appear.
D Predisposition testing determines susceptibility such as for breast cancer; presymptomatic testing indicates that if the gene is present, symptoms are certain to appear.
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