A group of Fall 2014 students made this animation (using the free animation maker at GoAnimate.com) to clarify the difference between sex and gender.
Student Commentary
The entire first chapter of Garbacik’s book Gender and Sexuality of Beginners is about the biological factors of sex and gender. Specifically, there is a lot that goes into the development of one’s biological sexual characteristics, so below is an animation that discusses the main biological and physiological factors contributing to sex determination.
(Click image to view video on GoAnimate)