Gonochorism is a fancy word for the sorts of individual sexes that humans have: ‘there are two sexes and each individual organism is either male or female’.

What struck my attention:

Two papers from 2008 have suggested that transitions between hermaphroditism and gonochorism or vice versa have occurred in animals between 10 and 20 times.^[15] In a 2017 study involving 165 taxon groups, more evolutionary transitions from gonochorism to hermaphroditism were found than the reverse.

Also interesting: in humans and most species, sex is (almost entirely) genetically determined, but that isn’t always true; ‘for example, alligators use temperature-dependent sex determination during egg incubation.’

I really wish humans had the (non-medical) option of sequential hermaphroditism; I would love to try changing sex!

https://en.wikipedia.org/wiki/Gonochorism