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Prenatal Diagnosis: Heredity Disorders, Other Biochemical Diseases, and
Disfiguring Birth Defects


There are over 250 recognized sex-linked diseases, affecting every organ
system. Of these, 95% affect males, (Emery, 1968). Despite these many sex-
linked diseases, at present prenatal diagnosis can specifically be made in fewer
than 40 diseases. (Emery, 1968). These sex-linked diseases are individual rare
and some are named after physicians who described them, for example, Hemophilia
A and B, Duchenne muscular dystrophy, fragile-X syndrome, Fabry disease, Hunter
syndrome, Lesch-Nyhan syndrome, and Menkes steely-hair syndrome. The following
discourse considers the reasons for the importance of prenatal diagnosis,
heredity disorders, and disfiguring birth defects.(Nora,1989).
Fabry disease is a biochemical disorder caused by a missing enzyme.
(Mulinsky, 1989). A complex fatty substance accumulates in the body because of
the missing enzyme which would ordinarily break this......

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Approximate Word Count: 2078
Approximate Pages: 9 (250 words per double-spaced page)

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