Tetrachromacy/Definition

This article contains just a definition and optionally other subpages (such as a list of related articles), but no metadata. Create the metadata page if you want to expand this into a full article.

Tetrachromacy [r]: Color vision characteristic of organism with four types of color receptors. Birds and insects are commonly tetrachromats and some human woman have tetrachromatic vision due to the phenomenon of X-inactivation.