Fragile X syndrome is a genetic disorder caused by a change to one of the genes on the X chromosome. Fragile X syndrome affects a child's learning, behavior, appearance, and health. Is the most common form of inherited developmental disability, is the most common cause of inherited mental retardation. The FMR1 gene is located on the X chromosome. This abnormal gene, which can be passed from generation to generation, is usually inherited through the gene that is carried by women.
Fragile X is caused by a mutation in the FMR1 gene that prevents the body from making an important protein, called FMRP. This protein helps create and maintain connections between brain cells and the nervous
Sign and Symptoms