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The Genetics of Phenylpyruvic Oligophrenia

A Contribution to the Study of the Influence of Heredity on Mental Defect

Published online by Cambridge University Press:  08 February 2018

George A. Jervis
George A. Jervis*
Affiliation:
From the Research Department of Letchworth Village, Thiells, New York
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Extract

Although considerable attention has been devoted during the past years to the problems of the influence of heredity on mental deficiency, no final conclusions have yet been reached. It appears well established at the present time, first, that in a large percentage of cases, variously estimated at from 40 to 80%, mental deficiency is significantly determined by genetic mechanisms, and second, that recessive genes seem to play a considerable role in such mechanisms (Lokay, 1929; Brugger, 1930a; Smith, 1930; Luxemburg, 1931; Juda, 1934; Kreyenberg, 1935).

Type
Part II.—Original Articles
Information
Journal of Mental Science , Volume 85 , Issue 357 , July 1939 , pp. 719 - 762
Copyright
Copyright © Royal College of Psychiatrists, 1939 

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