Sex, gender and gender roles and sexual identity. Sex: biologically female or male, based on genetic or anatomical sex (chromosomes, hormones, reproductive organs, external genitalia) Gender role: the role a person is expected to perform. Gender identity: the gender a person believes himself or herself to be, subjectively felt experience of being masculine, feminine or ambivalent. Internal genitalia: external genitalia, secondary sexual characteristics. Traditionally discrete categories: adult female= xx, estrogen, vagina, ovaries, breasts, adult male= xy, testosterone, penis, testes, facial hair. Socially constructed: self-perception and perceived, traditional gender roles and performance, how you act, how you dress, how you speak, how you interact. Historical view of sex: discrete categories, male and female. Modern view of sex: continuum, male, intersex, female. Three important gender domains: gender identity, gender expression, gender behaviour. Cisgender people have them gender identities with those assigned to them.