Abstract
ON seeing the webbed neck of a 24 year old mentally retarded male, one of us (M. B.) was prompted to question the cytogenetic sex. The man in question was of average height, well built, with adult genitalia, descended testes, and male hair distribution. The inguinal lymph nodes were palpable. He was living in an institution among mental defectives and had a history of suspected arson, seizures, emotional disturbances and familial mental retardation of marginal degree.
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KELLY, S., ALMY, R. & BARNARD, M. Another XYY Phenotype. Nature 215, 405 (1967). https://doi.org/10.1038/215405a0
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DOI: https://doi.org/10.1038/215405a0
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