Table 2.

Criteria used to detect sex chromosome aneuploidy

Criterion	Predicted sex chromosomes
$Z_{\text{Y}}$ < 3, $Z_{\text{X}}$ < −3	XO
$Z_{\text{Y}}$ < 3, $\left|Z_{\text{X}}\right|$ < 3	XX
$Z_{\text{Y}}$ < 3 and $\left|Z_{\text{X}}\right|$ > 3,	XXX
$Z_{\text{Y}}$ > 3, $\left|Z_{\text{X}}\right|$ < 3 and $Z_{\text{X}}$ > $Z_{\text{X}}\prime$	XXY
$Z_{\text{Y}}$ > 3, $Z_{\text{X}}$ < −3 and $Z_{\text{X}}$ > $Z_{\text{X}}\prime$	XYY
$Z_{\text{Y}}$ > 3 and $\text{R}\in \left[-0.8, 0.8\right]$ $[\text{R}={\log }_2\left(\left|Z_{\text{X}}/Z_{\text{X}}\prime \right|\right)]$	XY