Your Account Join Kify Health World Submit story Login Email address: Password: Forgot your password? Community Users Tools Topics (Upcoming) bones, joints & muscles brain & nerves cancer child health diabetes, thyroid & hormones drugs ear, nose & throat eyes & vision fitness food & nutrition heart & blood vessels immune system infections kidneys & urinary system lungs & respiratory system men's health mental health mouth & teeth others reproductive health skin, hair & nails stomach, intestine, liver & digestive system women's health More Help & FAQ RSS Feeds API About Kify Health World

View story Tetrachromat Females 2 / 0 http://ray.tomes.biz/b2/index.php/a/2007/06/21/p147 Submitted by healthworld 28 months, 4 weeks, 1 day, 1 hour ago The title is just a fancy way of saying that some women seem to have four colour receptors in their eyes rather than the usual three. Actually some people also have a different set of three and this was known for some time before the discovery that quite a few women see extra colours than the rest of the population. Of course some men are missing a receptor and have only two and as a result are called colour blind. Compared to tetrachromats we are all colour blind. Tags: vision comment (0) | Category: eyes & vision | Add healthworld as a source Comments Votes (my sources) Votes (Everyone) Add your comment Add your comment If you already have an account, sign in: Email address: Password: If you don't, just complete these fields: (or join Kify Health World for free) Your name: Your site: (optional) Your comment: (You have up to 5000 characters left) Can you see the 5 most prominent letters/numbers in this image? (case insensitive) Please enter them here: « go back

Health Chapter is a health based social network of people sharing their disease experiences, treatment options, knowledge and giving support to other people suffering from similar health problems. Join Now

Âé Kify Health World 2007