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Eye color is an inherited trait determined by multiple genes. [14] [15] These genes are sought by studying small changes in the genes themselves and in neighboring genes, called single-nucleotide polymorphisms or SNPs. The total number of genes that contribute to eye color is unknown, but there are a few likely candidates.
Martin-Schultz scale. The Martin–Schultz scale is a standard color scale commonly used in physical anthropology to establish more or less precisely the eye color of an individual; it was created by the anthropologists Rudolf Martin and Bruno K Schultz in the first half of the 20th century.
The original Martin scale, summarized below, consists of 16 colors (from light blue to dark brown-black) that correspond to the different eye colors observed in nature due to the amount of melanin in the iris. The numbering is reversed in order to match the Martin–Schultz scale, which is still used in biological anthropology. In this case ...
Eye color is determined by the amount and distribution of melanin in the iris of the eye, in addition to the genes we inherit from our parents. With most eye colors, the amount of melanin is ...
With brown eyes taking an overwhelming lead, all of the other eye colors have lower percentages. According to WorldAtlas , 8-10 percent of the world's population have blue eyes.
This page was last edited on 25 January 2020, at 23:50 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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The human eye can distinguish about 10 million different colors, but most of them lie outside the gamut of this image. Created with the following very short program written in Chipmunk Basic : 10 for x = 0 to 999 20 for y = 0 to 999 30 z = int ( y / 100 ) * 10 + int ( x / 100 ) 40 graphics color x , y , z ' x=red y=green z=blue 50 pset x , y 60 ...