A primer on the use of mouse models for identifying direct sex chromosome effects that cause sex differences in non-gonadal tissues

Table 5 Progeny of Cross C: XY*^X x XY

Genotypes^a	Gonads	NPX^b	NPY [−Sry]	Sry	PAR [−Sts]	Sts	X^m	X^p	Xⁱ
[X^pO]^c	F	1	0	0	1	1	0	1	0
X^pY*^x	F	1+	0	0	2	2	0	1	0
X^mX^p	F	2	0	0	2	2	1	1	1
X^mY	M	1	1	1	2	2	1	0	0
[X^mX^pY*^X]^d	F	2+	0	0	3	3	1	1	1
[X^mYY*^X]	M	1+	1	1	3	3	1	0	0

^aParental sources of the X chromosomes are indicated (X^m: maternal; X^p: paternal)
^bFigure 3 includes the structure and gene content of the Y*^X chromosome
^cOn a B6 background, these females die in utero [75]
^dThese X^mX^pY*^X females are mated to XYˉSry males in order to produce the XYˉY*^X Sry males used for Cross B (see Additional file 1)