Genotypesa
| Gonads | NPXb
| NPY [−Sry] |
Sry
| PAR [−Sts] |
Sts
| Xm
| Xp
| Xi
|
---|
[XpO]c
| F | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 |
XpY*x
| F | 1+ | 0 | 0 | 2 | 2 | 0 | 1 | 0 |
XmXp
| F | 2 | 0 | 0 | 2 | 2 | 1 | 1 | 1 |
XmY | M | 1 | 1 | 1 | 2 | 2 | 1 | 0 | 0 |
[XmXpY*X]d
| F | 2+ | 0 | 0 | 3 | 3 | 1 | 1 | 1 |
[XmYY*X] | M | 1+ | 1 | 1 | 3 | 3 | 1 | 0 | 0 |
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aParental sources of the X chromosomes are indicated (Xm: maternal; Xp: paternal)
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bFigure 3 includes the structure and gene content of the Y*X chromosome
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cOn a B6 background, these females die in utero [75]
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dThese XmXpY*X females are mated to XYˉSry males in order to produce the XYˉY*X
Sry males used for Cross B (see Additional file 1)