Why is it that they can be only a certain amount of colours?
2007-06-10 08:51:15 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
We don't possess the necessary genes for coding these colours. The current colours result from the pigments eumelanin being produced by the iris and its varying ratios. Addtions of other pigments, e.g. lipochrome, causes the other shades of colour.
Other animals such as birds use other pigments, giving the reds and oranges often seen.
Elizabeth Taylor's violet eyes can be explained, she had relatively light blue eyes allowing the darker red capillaries to be seen on the iris surface. This combination gave the impression of violet (a mix of red and blue)
2007-06-10 09:01:12 · answer #1 · answered by Tsumego 5 · 5⤊ 0⤋
I thought Elizabeth Taylor had purple (violet) eyes.
That's just not the way we evolved. The melanin/lack of melanin we have in regards to eye colour is what humans have evolved to have. I suppose its possible for a genetic mutation to occur that would code for these colours and then they cold be passed down but remember evolution is all about natural selection. If an odd coloured eye doesn't prove to be a favourable trait it will die out.
2007-06-10 08:57:47 · answer #2 · answered by Lady Geologist 7 · 0⤊ 1⤋
The Eye Color Varies Due the varied colors of the Iris.
2007-06-10 09:01:41 · answer #3 · answered by Tanay,the cool guy 2 · 0⤊ 1⤋
honey, it's just the way it is....
TRAITS!
2007-06-10 08:54:44 · answer #4 · answered by names_idol 1 · 0⤊ 3⤋