Here's everything you never knew about unique / heritable humans traits.
This video answers all of the following questions:
- What percent of people have a palmaris longus?
- What thumbprint type is the most common?
- How rare is a hitchhiker's thumb?
- What percentage of people are double jointed?
- How common is a detached earlobe?
- How common is curly hair?
- What is a preauricular pit?