All people with blue eyes have one common ancestor

Scientists reveal that a genetic mutation, happening around 10,000 years ago, led to the repression of melanin for humans with blue eyes

Weird But True Human Body: 300 Outrageous Facts about Your Awesome Anatomy by National Geographic Kids

What causes blue colored eyes, and why does it mostly come with white skin color and blonde hair? - Quora

Most Common Eye Color - All About Vision

How is it known that everyone with blue eyes has one single ancestor, rather than this mutation occurring in multiple individuals at many different times? : r/askscience

If You Have Blue Eyes, You're Related to a Lot More People Than, blue eye

Blue Eyes: 13 Fascinating Facts from Medical Experts You Need to Know

Rarest Eye Color: What it Is and Why

Rarest Eye Color: What it Is and Why

AsapSCIENCE — Blue-eyed humans have a single, common ancestor