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Characteristics of Fragile X Syndrome
Males and females exhibit quite different physical, cognitive, behavioral, sensory, speech and language impacts of fragile X syndrome. In general, females with fragile X either do not have the characteristics seen in males, or the characteristics show up in a milder form. The difference is probably due to the fact that females have two X chromosomes instead of the one that males carry. As a result, females who have fragile X, have two sets of instructions for making FMRP (fragile X mental retardation protein), one that works and one that doesn't. Males with fragile X have only one X chromosome with its nonfunctioning FMR1 (fragile X mental retardation 1) gene. It appears that females are able to produce enough of the FMRP to fill most of the body's needs, but not all. Checklist of major characteristics of fragile X syndrome What physical features appear in people with fragile X syndrome? How does fragile X impact on someone's intellectual or cognitive ability? What are the behavioral features associated with fragile X syndrome? How does fragile X syndrome affect the sensory system? What speech and language characteristics are common in persons with fragile X? Gross motor skill development
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Fragile X syndrome affects individuals in a wide variety of ways. Some
individuals experience significant challenges because of the effects of fragile X, while the impact on others is so minor that they will never be diagnosed.
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