Skip to ContentGo to accessibility page

Figure 12.1 “It’s a _____!”: When someone announces the birth of a new baby, a first question is often whether the infant is a boy or girl. (credit: “It’s a Boy!” by George Ruiz/flickr, CC BY 2.0)

Introduction

A friend announces, “My sister just had a baby last night!” Many people will immediately ask, “Is it a boy or a girl?” Gender is central to the way people think about and interact with others. Anthropologists are curious about the many ways in which gender shapes impressions and assumptions about people and why gender is such a primary concern. Gender influences how people think about their own identities, how they present themselves to others, and how they plan to lead their lives. People’s sexual identities and desires are shaped by gendered notions of themselves and others.

Since the beginning of the discipline, anthropologists have described how cultures construct gender roles and sexual practices in many different cultural contexts. This chapter will explore the origins of gender and consider various forms of biological evidence for gender differences. And it will consider how power operates in cultural constructions of gender and sexuality. Anthropologists have discovered great diversity in human systems of gender and expressions of sexuality.

Citation/Attribution
Reuse and redistribution of this content in digital or print format:
  • This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's prior written permission.
  • This book uses the Creative Commons Attribution-NonCommercial-ShareAlike License, which means that you can reuse and modify the material only for noncommercial purposes, must attribute OpenStax, and must distribute any derivative works under the same license.
  • Any commercial printing of this textbook, including using a local or custom printer, must be approved by OpenStax, and proper citation provided.
  • OpenStax-copyrighted images, activities, assessments, and similar components of this book are subject to the same licensing – CC-BY-NC-SA. They can be used for noncommercial purposes with attribution. Commercial use requires permission.
  • Permission requests: Anyone who intends to incorporate this content (including text, images, and other components) into large language models, use it in AI offerings, use it commercially (including in print), and/or has questions about another use case is welcome to complete our reuse request form.
Attribution information
  • If you are redistributing all or part of this book in a noncommercial print format, then you must include on every physical page the following attribution:

    Access for free at https://openstax.org/books/introduction-anthropology/pages/1-introduction

  • If you are redistributing all or part of this book in a noncommercial digital format, then for every page that includes OpenStax content, you must license the derivative work under the same CC-BY-NC-SA license as the original, and include on every digital page view the following attribution:

    Access for free at https://openstax.org/books/introduction-anthropology/pages/1-introduction

Citation information

The information below includes the information needed to generate citations in most major styles (APA, MLA, etc.); you must reformat and organize the information as needed to fit the requirements of the style. Use the information below to generate a citation. We recommend using a citation tool such as this one.

© Apr 23, 2026 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo, and Rice University name, and Rice University logo trademarks, or wordmarks are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.