This is the world of tetrachromacy, this very unusual genetic ... the ordinary becomes extraordinary in revealing the beauty hidden in the fabric of our colorful world.

The extra testing is necessary because it seems that while 12 percent of women may test positive for the genes for tetrachromacy ... taking along a swatch of fabric or a bit of tile.

It doesn't require that the person preparing the test be a tetrachromat herself.<BR><BR>My understanding is that people with this condition usually have two different red photoreceptors both ...

Tetrachromacy is a rare genetic trait allowing individuals, primarily women, to perceive up to 100 million colors—99 million more than the average person. With four types of cone cells in their ...

Tetrachromacy is a rare genetic trait that ... in fact something different about her vision until undergoing a genetic test in 2012. Genetic testing looks for mutations in two genes on the X ...

On 28 February 2015, an online test for tetrachromacy (a rare condition of a person's having four cone cells in the eye) went viral after being shared on the LinkedIn social media site.

who say computer screens do not provide enough color information and “it is therefore impossible for an online test to investigate tetrachromacy.” “Additionally, the claim that 25% of people ...

Per Newcastle University’s Tetrachromacy Project, the condition is actually very, very rare — almost nonexistent, among men — and “impossible” to test on a computer screen. Derval ...