(no subject)

I can make the math of sex chromosomes work for a two-sex species like humans. I can make the math work for a four-sex species: XXZ and XXW are one sex, YYZ and YYW are another, XYZ is a third, XYW is a fourth. This math also works for a six-sex species, obviously. Three-sex species, which is where I'm trying to make the math go? Not so much.

Halp.

(I am contemplating gender roles for a three-sex species, assuming the vast majority of people of that species, like the vast majority of humans, are cisgender. I keep running into the fact that humans, at least white USAian humans, tend to conceive of gender roles as binaries, not trinaries.)