Summary
the literature dealing with structural aberrations of the Y chromosome and their phenotypic effects is reviewed. A new observation of a patient with Turner's syndrome and the karyotype 45,X/46,X,i(Yp) reported here allows some conclusions on the problem of the localization of sex-determining factors on the Y chromosome. The comparative analysis of all these cases leads to the assumption that the genes for the initiation of testicular development are located on the proximal part of the long arm of the Y chromosome, while the genes responsible for the maturation of the testis are localized on the short arm of the Y chromosome.
Zusammenfassung
Strukturelle Aberrationen des Y-Chromosoms und ihre phänotypischen Auswirkungen werden an Hand der einschlägigen Literatur zusammenfassend diskutiert. Eine eigene Beobachtung eines Turner-Syndroms mit dem Chromosomenbefund 45,X/46,X,i(Yp) erlaubt Aussagen über die Lokalisation von Genen auf dem Y-Chromosom. Auf Grund der Literatur und unseres Falles wird die Annahme gemacht, daß für die Testisanlage zuständige Gene auf dem proximalen Teil des langen Armes des Y-Chromosoms liegen und daß Gene auf dem kurzen Arm des Y-Chromosoms für die Ausreifung der Testes verantwortlich sind.
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Siebers, J.W., Vogel, W., Hepp, H. et al. Structural aberrations of the Y chromosome and the corresponding phenotype. Hum Genet 19, 57–66 (1973). https://doi.org/10.1007/BF00295235
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DOI: https://doi.org/10.1007/BF00295235