Sex is an emergent property of multiple genetic networks. This doesn't mean that it doesn't exist or that it is not bi-modal, but it is far from simple.
The fact that we don't go around performing genetic testing on people before we interact with them also raises questions about whether sex itself matters, or whether there must be different definitions for sexed categories dependent on policy purpose. (e.g. based on genitals when the concern is sexual violence; based on fertility for the purposes of reproductive medicine; based on gender performance; based on hormone levels, etc.)
Sex is an emergent property of multiple genetic networks. This doesn't mean that it doesn't exist or that it is not bi-modal, but it is far from simple.
https://www.nature.com/articles/518288a
The fact that we don't go around performing genetic testing on people before we interact with them also raises questions about whether sex itself matters, or whether there must be different definitions for sexed categories dependent on policy purpose. (e.g. based on genitals when the concern is sexual violence; based on fertility for the purposes of reproductive medicine; based on gender performance; based on hormone levels, etc.)