Dec 31, 2009
Fragile X syndrome, a genetic condition involving changes in the long arm of the X chromosome, is the most common form of inherited mental retardation. Individuals with this condition have developmental delay, variable levels of mental retardation, and behavioral and emotional difficulties. They may also have characteristic physical traits. Generally, males are affected with moderate mental retardation (since they only have one X chromosome) and females with mild mental retardation.
Fragile X syndrome is the most common form of inherited mental retardation in the United States. Fragile X syndrome is...
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