File:Quantitative assessment of human eye color.png

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English: Quantitative assessment of eye color. Plotted are the normalized median values of green (x-axis) and blue (y-axis) levels of each individual's irises. We fitted a principal curve that explains most of the variation in the data (red dashed curve). The T-index is defined by the arc-length from the projection of each point on the curve to the end of the curve that corresponds to the lightest eye color. In the figure are examples of eye photos at their respective position in the T-index curve.
Date Published: March 21, 2013
Source Beleza S, Johnson NA, Candille SI, Absher DM, Coram MA, Lopes J, et al. (2013) Genetic Architecture of Skin and Eye Color in an African-European Admixed Population. PLoS Genet 9(3): e1003372. doi:10.1371/journal.pgen.1003372 http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1003372
Author Sandra Beleza , Nicholas A. Johnson, Sophie I. Candille, Devin M. Absher, Marc A. Coram, Jailson Lopes, Joana Campos, Isabel Inês Araújo, Tovi M. Anderson, Bjarni J. Vilhjálmsson, Magnus Nordborg, António Correia e Silva, Mark D. Shriver, [ ... ], Hua Tang
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Eye color distribution in Cape Verdeans shown in (D) in this figure, using T-index.
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