[Molecular cytogenetics of fragile X syndrome].

Abstract excerpt

Fragile X syndrome is the most common heritable form of mental retardation, and affects 1 in 1500(male)-2500(female), with minor dysmorphic manifestations such as long face with large protruding ears and macro-orchidism in mentally retarded male patients. The syndrome is caused by dynamic mutation(trinucleotide repeat expansion) at FRAXA located on the long arm of X chromosome. Molecular diagnosis enables carrier...

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