Listen, as someone who has an atypical genotype (the marker for Turner's Syndrome is XO because the second X chromosome went all wibbly), I can tell you from lived experience that the idea of sex and biology is much more tricksy than we think...
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@stratkitten Absolutely more complex, and all of the different potential outcomes is natural.
That diagram is fine as an example of typical outcomes, except that the Husband would never be a Democrat when the wife is a Republican.