Link: The Search for Tetrachromats: The human masters of the color world

The idea of tetrachromatism has been around for a while, but it has been hard to prove until recently. Due to mutations that cause color-blindness, the daughters of color-blind men have the possibility of having 4 cones to our normal 3. The result is that they see many, many more shades of color than we do. 

Advertisements