Originally posted 2020-12-01 15:01:20.
Sex is determined by chromosomal makeup. In humans, this has specific and recognisable morphological effects that place the individual into a recognisable set. Sex is either Male or Female, in normal humans. Males have penises and testes and females have vaginas and ovaries. There are some rare conditions which may result in an indeterminate physical condition. These are called Intersex. For almost all humans, however, Sex can accurately be determined at birth, just by looking at the genitalia.