Hereditary factors in stammering.
A pedigree from Hazaribagh District of Bihar (india) with 12 stammerers spread over five generations was analysed for the mode of inheritance of stuttering. A predisposition seems to be a prerequisite for its occurrence. The relative roles of heredity an environment in the expression of stammering were evaluated. Transmission appears to be by a dominant autosomal. Variable expressivity, incomplete penetrance as well as partial sex-limitation as other causes have also been considered.
D000328:Adult; D000367:Age Factors; D002675:Child, Preschool; D005260:Female; D007839:Functional Laterality; D005787:Gene Frequency; D005799:Genes, Dominant; D006801:Humans; D007194:India; D008297:Male; D010375:Pedigree; D012737:Sex Factors; D013342:Stuttering / Q000235:genetics*