Evolution's rainbow : diversity, gender, and sexuality in nature and people / Joan Roughgarden.

Includes bibliographical references and index.

Introduction : Diversity denied -- pt. I. Animal rainbows. -- Sex and diversity -- Sex versus gender -- Sex within bodies -- Sex roles -- Two-gender families -- Multiple-gender families -- Female choice -- Same-sex sexuality -- The theory of evolution -- pt. II. Human rainbows. -- An embryonic narrative -- Sex determination -- Sex differences -- Gender identity -- Sexual orientation -- Psychological perspectives -- Disease versus diversity -- Genetic engineering versus diversity -- pt. III. Cultural rainbows. -- Two-spirits, mahu, and hijras -- Transgender in historical Europe and the Middle East -- Sexual relations in antiquity -- Tomboi, vestidas, and guevedoche -- Trans politics in the United States -- Appendix: Policy recommendations.