Figure 5From: Molecular diagnostic testing for Klinefelter syndrome and other male sex chromosome aneuploidiesAverage percent X allele signal of four XA markers versus sample ID for male samples with 46,XY and 48,XXYY karyotypes. The average percent X allele signal is the average for all four markers of the ratio of signal from the X-chromosome specific allele divided by the total signal from both the X-chromosome and autosome specific alleles, expressed as a percentage.Back to article page