Molecular Analysis Of The Additional X-Chromosome In Klinefelter's Syndrome Patients.

ABSTRACT

The parental origin of the extra X chromosome in five families with Klinefelter's syndrome (47,XXY) was studied DNA restriction fragment length polymorphisms (RFLPs). In four, the extra X chromosome was maternal in origin and one it was paternal. Four X-linked marker loci were used and we were able to specify the origin of the extra X chromosome in all cases. The parental origin of the extra X chromosome in five families with Klinefelter's syndrome (47,XXY) was studied DNA restriction fragment length polymorphisms (RFLPs). In four, the extra X chromosome was maternal in origin and one it was paternal. Four X-linked marker loci were used and we were able to specify the origin of the extra X chromosome in all cases. The parental origin of the extra X chromosome in five families with Klinefelter's syndrome (47,XXY) was studied DNA restriction fragment length polymorphisms (RFLPs). In four, the extra X chromosome was maternal in origin and one it was paternal. Four X-linked marker loci were used and we were able to specify the origin of the extra X chromosome in all cases. The parental origin of the extra X chromosome in five families with Klinefelter's syndrome (47,XXY) was studied DNA restriction fragment length polymorphisms (RFLPs). In four, the extra X chromosome was maternal in origin and one it was paternal. Four X-linked marker loci were used and we were able to specify the origin of the extra X chromosome in all cases.