Sex refers to biological characteristics, while gender is socially determined based on those characteristics.
Sex is biologically determined based on chromosomes, hormones, gonads, internal reproductive anatomy, and external genitalia.
The biology of human sexuality includes the reproductive system and the sexual response cycle, as well as the factors that affect them.
Biological, emotional, and sociocultural factors can influence various sexual issues, such as disease and dysfunction.
From birth, children are assigned a gender and are socialized to conform to certain gender roles based on their biological sex.
Viewing gender as a spectrum allows us to perceive the rich diversity of genders, from trans- and cisgender to genderqueer and agender.
Gender identity is a person's subjective experience of their own gender; how it develops is a topic of much debate.
Though biology plays an important role, the way in which sexuality is expressed and acted upon is highly influenced by culture.
A person's sexual orientation is their emotional and sexual attraction to a particular sex or gender.
Discrimination based on sex and gender contributes to harassment, unequal treatment, and violence against women, girls, and transgender and gender non-conforming people.