Nine out of every ten women wear shoes that are too small for them.
Our organs are what keep our bodies going every day, but how much do you really know about them?
You live in your body 24 hours a day, but how much do you really know about it?
Information is crammed into our heads in school. How much did you retain from science class?
Do you know how twins or blue eyes occur? Take this quiz and see how much you know about genetics!
Sign up for ChaCha and you'll be able to easily get answers from thousands of ChaCha Guides on the Web and on your mobile phone, see your answer history, and stay up to date with the latest updates from ChaCha.