[quote=@LegendBegins]
[@The Grey Dust]
The purpose of "Add your own" is to prevent that from being an issue. Male and female are easy defaults because under non-genetically mutated situations, there are only two possible chromosome configurations, XX and XY, one thing that cannot change as culture changes. This allows users to add anything they want in the self-defined option or to use the biological defaults, preventing arguments or complaints about a particular group not being represented.
[/quote]

I don't see that option presently available. That or I'm doing it wrong.