Insights into Eye Color Phenotypes and Probabilities

Understanding eye color phenotypes and probabilities through visual analysis of data from Ireland, Greece, and Poland. Utilizing programming techniques to create colorized scatterplots, frequency tables, and probability lists. Observations reveal how high probabilities of certain eye colors translate into actual phenotypic expressions, with a focus on the frequency of green eye color within populations.

• Eye Color
• Phenotypes
• Probabilities
• Programming
• Data Analysis

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1. VISUAL(EYES)ING PREDICTED PHENOTYPIC PROBABILITIES BY: SIMUE` ROSE ISABEL

2. THE PROBLEM A SOLUTION Re-define actual eye phenotypes into three categories Standardize colorlist language Create a probability table Visualize actual eye color data in colorized scatterplot Data from three countries (Ireland, Greece, and Poland) from 1,551 subjects Varying phenotypic trends Slightly inconsistent records of actual phenotypes Visualizing .txt data with Python Unnatural population frequency: Green eye color

3. THE EASY WAY OR THE HARD WAY? Data used: The HIrisPlex system for simultaneous prediction of hair and eye colour from DNA by Susan Walsh, et al. Easy Way = IF(D74="","",IF(ISNUMBER(SEARCH("brown",D74,1)),"brown",IF(ISNUMBER(SEARCH("blue",D74,1)),"blue",""))) Hard Way = Typing out each actual phenotype for 309 predictions (subject to random error)

4. PROGRAMING Data into list of list to create frequency table Probability table plots data points Organized data points into lists of colors (blue, brown, green) Plotted data in (6,6) scatterplot Changed the colors to fit data Imported manipulated csv file and created function to convert excel info into a reader Created colorized probability lists to correspond with imported data and plotted points Forward loop to index and add data to probability list using range & len Changed strings into floats corresponding to each color_list index number ( green is green is value of prob_Green)

6. VISUALIZED RESULTS Probabilities sum to 1 High probability of Blue rarely transforms into actual phenotypic expressions of Brown or Green High probability of Brown, expresses itself as Blue and Green more frequently than high prob_Blue The frequency of Green eye color is present within the population, when prob_Blue and prob_Brown are lower Green eye color appears more frequently when prob_Brown is higher

7. WORKS CITED The HIrisPlex system for simultaneous prediction of hair and eye colour from DNA.Walsh, Susan et al. Forensic Science International: Genetics , Volume 7 , Issue 1 , 98 115.