They recruited 800 people with blue eyes and found that 99.5% (!!!!) of them had the same mutation in the gene that affects the color of their eyes.

Is Your Eye Color Real? Season 7 Episode 10 | 5m 37s Video has Audio Description, Closed Captions | AD CC. The eyes are often the first thing we see when we look at someone. And when you look at ...

Close up of snow leopard at zoo. (Image credit: Ellen van Bodegom via Getty Images) Tabin and his co-author documented the eye colors of more than 40 cat species by looking at cat images online.