Fragile X Syndrome What is Fragile X syndrome? Fragile X syndrome is the most common form of inherited mental retardation.
Fragile X happens when there is a change, or mutation, in a single gene called the
Fragile X is inherited, which means it ...
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Fragile X happens when there is a change, or mutation, in a single gene called the
Fragile X is inherited, which means it ...
More Information