An unusual inheritane pattern for spinal muscular atrophy.
D000483:Alleles; D002675:Child, Preschool; D003711:Demyelinating Diseases; D005260:Female; D005838:Genotype; D006801:Humans; D007223:Infant; D008297:Male; D009046:Motor Neurons; D009133:Muscular Atrophy / Q000235:genetics*; D010243:Paralysis; D010375:Pedigree; D013118:Spinal Cord Diseases