By creating an account, you acknowledge that PBS may share your information with our member stations and our respective service providers, and that you have read and understand the Privacy Policy and Terms of Use.
Become a WTTW member to enjoy
WTTW
Passport
Get extended access to 1600+ episodes, binge watch your favorite shows, and stream anytime - online
or in the PBS app.
Sexual reproduction is part of the very definition of what it means to be an animal and as you'll see life has found a variety of methods to pass down genetic information. We explore the differences between sex and gender, and look at sex determination systems, examine how same-sex behavior happens all across the animal kingdom, and live a day-in-the-life of a hermaphroditic clownfish.
