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"sex is a vast and messy collection of properties."
Yes, but nevertheless, the sex binary obtains, regardless of discussion of chromosomes, sex disorders, hormone receptors and the like. The point worth remembering is that there are just *two* routes for genetic information to be reproduced: through eggs, or through sperm. *That* is the binary. This is a useful summary: thecritic.co.uk/life-is…
"sex is a vast and messy collection of properties."
Yes, but nevertheless, the sex binary obtains, regardless of discussion of chromosomes, sex disorders, hormone receptors and the like. The point worth remembering is that there are just *two* routes for genetic information to be reproduced: through eggs, or through sperm. *That* is the binary. This is a useful summary: https://thecritic.co.uk/life-is-diverse-so-what/
that is one of the properties we call sex, yes
No; it's the only one. The others are *associated with* sex. Hence the phrase "secondary sex characteristics" (breasts, wide hips; or facial hair, greater musculature) and "primary sex characteristics" (vagina, penis).