How do doctors test for the presence of a BRCA1 mutation?
A) Ovarian tissue is biopsied and tested for the presence of the mutation in the cells.
B) A DNA sample is extracted from epithelial cheek cells in the saliva for genetic testing.
C) A blood sample is tested for the presence of a protein particular to the mutation.
D) A DNA sample is extracted from the nuclei of white blood cells for genetic testing.
E) Breast tissue is biopsied and tested for the presence of a protein on the cell surface.
Correct Answer:
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