This document outlines the key topics and concepts covered in a course on gender systems. It discusses the debate around the role of nature versus nurture in gender, examining biological and sociological research. It also explores how gender roles have changed over time and vary across cultures, as shown in the work of anthropologists like Margaret Mead. Later sections address how the traditional views of two distinct gender identities linked to biological sex have been questioned, along with the role of mass media in both reflecting and reinforcing gender norms.