fragile X syndrome

(redirected from Martin-Bell syndrome)
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fragile X syndrome

n.
An inherited disorder caused by a defective gene on the X chromosome and marked by intellectual disability, developmental disorders, enlarged testes, and facial abnormalities in males and by mild or no effects in heterozygous females.

fragile X syndrome


n.
a widespread form of mental retardation caused by a faulty gene on the X chromosome.
[1980–85]