Genetics are surprising, as we never know what we'll inherit. Some people are born with physical traits that are quite incredible.
Here are 15 photos of people with fascinating physical characteristics.
1. Salt and pepper and lashes
2. They inherited a thumb from each parent
3. Those eyes!
4. His beard has 5 colors
5. Raynaud's, a syndrome that affects blood flow to the extremities
6. A thumbs-up birthmark!
7. Their index finger has replaced their thumb
8. All their kids were born with a single white hair
9. Each follicle produces two hairs
10. When you and your cat both a have a mole on your palm - a match made in Heaven!
11. Wonder what a palm-reader would think of this
12. A couple with matching moles
13. A deep cavity under their tongue
14. Elf ear!
15. Concave joints