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Q567

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1. A 35-year-old retarded man with a strong history of mental retardation among male relatives undergoes genetic testing. His lymphocytes are cultured in a medium containing methotrexate and 4% of the metaphase chromosomes in the lymphocytes show a breakpoint at q27.3 on the X chromosome. This man is at increased risk for which of the following cardiovascular disorders?
A.
B.
C.
D.
E.


 

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