Summary
The Y chromosomes of 30 mentally defective patients with long Y chromosomes (Y≧F) and of 26 patients with Y chromosomes of typical size were studied.
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1.
The nonfluorescent segment of Y increases proportionally with the length of the entire chromosome.
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2.
In 27 out of 30 cases of long Y two fluorescent segments were recognized; in all other cases only one segment was observed.
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3.
No case of structural polymorphism of Y was found.
Zusammenfassung
Die Y-Chromosomen von 30 schwer schwachsinnigen Patienten mit langem Y-Chromosom (Y≧F) und von 26 Patienten mit Y-Chromosomen der üblichen Länge wurden untersucht.
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1.
Das nichtfluorescierende Segment des Y nimmt proportional mit der Länge des Gesamt-Chromosoms zu.
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2.
Bei 27 von 30 Fällen mit langem Y wurden zwei fluorescierende Segmente erkannt; in allen anderen Fällen wurde nur ein Segment beobachtet.
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3.
Es fand sich kein Fall mit strukturellem Polymorphismus des Y.
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Soudek, D., Langmuir, V. & Stewart, D.J. Variation in the nonfluorescent segment of long Y chromosome. Hum Genet 18, 285–290 (1973). https://doi.org/10.1007/BF00291124
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DOI: https://doi.org/10.1007/BF00291124