Trinucleotide repeat causes all except:: (A) Hereditary motor sensory neuropathy, (B) Frederich ataxia, (C) Spinocerebellar ataxia, (D) Huntington disease
Answer is A. Ans: a (Hereditary motor sensory neuropathy) Ref: Ganong, 22nd ed,p. 215Some examples of trinucleotide repeat diseases:Huntington's disease -- CAGFragile X syndrome-- CGGSpinocerebellar ataxia '-- CAGMyotonic dystrophy-- CTG(Type 1,2,3,63)Frederich's ataxia-- GAA