title: Social class and frequency of XYY and XXY.
abstract: The karyotype and paternal social class were determined for 10,348 consecutively born males. No significant difference in paternal social class was associated with the occurrence of the XYY or the XXY karyotype. This argues against the suggestion that socioeconomic factors significantly affect the frequency of the nondisjunctional events leading to these chromosome abnormalities.
mesh_terms: D000367:Age Factors; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D006801:Humans; D007621:Karyotyping; D008297:Male; D012730:Sex Chromosomes; D012923:Social Class; D012959:Socioeconomic Factors; D014314:Trisomy; D044465:White People