Re: How many different colour can human eyes see?
Posted by Ben on Mar 23, 2002 at 13:05
Re: How many different colour can human eyes see? (Natalie L. Smith)
A bluish green actually. Usually closer to green.
Tetrachromats do indeed exist. They are the result of a genetic combining error that cuts the X chromosome and recombines it to patch the genes for green and blue photoreceptor pigments together. This error produces color blindness in men (as they only get 'red' and 'bluishgreen' pigments), and four colors in some women (they have two X chromosomes, so they get red, green, blue, and bluishgreen).