this is just a one line character 
I chose to put this line in to show that there's no corralation between human body parts and gender.

Line one is the Dr looking at the Yin Yang's body parts at birth and trying to decide what gender Yin is by looking at its body parts, but Yin's body parts keep changing so the Dr can't use "sex" (using body parts to determine gender) to determine Yin's gender.

http://bustablake.deviantart.com/gallery/54683881/Yin-Yang-Graphic-Novel

https://www.youtube.com/watch?v=J6juhTQqnF4