This lecture discusses gender, sex, sexuality, and their relationship to law and society. It defines key terms like sex, gender, gender identity, and sexual orientation. It explores how gender and sexuality are socially constructed and influenced by socialization agents like family and media. Gender roles are learned from a young age and reinforced over one's life. While views of gender and sexuality differ across cultures, stratification by gender through division of labor appears universally. The lecture also examines topics like sexism, discrimination, and heterosexism.