Article
Molecular genetic analysis of mentally retarded males with features of the fragile-X syndrome.
Journal of intellectual disability research : JIDR - 1 Dec 1995
Butler M G, Pratesi R, Vnencak-Jones C L
Abstract excerpt
The fragile-X[fra(X)] or Martin-Bell syndrome is the most common familial cause of mental retardation and is characterized by the presence of an Xq27.3 chromosome fragile site. Unstable DNA sequences representing large increases in the number of CGG trinucleotide DNA base repeats of the FMR-1 gene are located at the fragile site and responsible for the fra(X) syndrome. In order to identify whether cytogenetically...
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