TY - JOUR T1 - RElation of hereditary pattern to clinical severity as illustrated by peroneal atrophy AU - ALLAN W Y1 - 1939/06/01 N1 - 10.1001/archinte.1939.00180230108008 JO - Archives of Internal Medicine SP - 1123 EP - 1131 VL - 63 IS - 6 N2 - Field work in the inheritance of human disease has brought to light two striking phenomena:First, in regard to many of the diseases due to unit traits, that is, conditioned by a single defective gene, a wide survey of 50 to 100 families possessing such a trait usually shows a triple pattern of inheritance: dominant, sex-linked recessive and simple recessive.How general this rule is in human, animal or plant genetics is not known, nor is it obvious why the same trait should be dominant in 1 family and recessive in a second and in a third ride the sex chromosomes down the generations, becoming manifest only in the males.The second phenomenon, a corollary of the first, is that the pattern of inheritance determines the age of onset and the clinical severity of various morbid unitary traits, as may be seen by a study of peroneal atrophy (Charcot-Marie-Tooth type). SN - 0730-188X M3 - doi: 10.1001/archinte.1939.00180230108008 UR - http://dx.doi.org/10.1001/archinte.1939.00180230108008 ER -