Chromosomes #'s 11 and 12 contain Eye Color Genes: Darker eyes are produced in the presence of more active alleles. In this situation, the Capital letters (F or B) represent alleles which are active in depositing dark pigment. Lower case letters (f or b) represent alleles which deposit little pigment. To determine the color of the eyes, assume there are two gene pairs involved, one of which codes for depositing pigment in the front of the iris, and the other codes for depositing pigment in the back of the iris. Determine the genotype of the first pair (FF,Ff,ff). and the the second (BB,Bb,bb). If your genotype is in the first column then check your eye color in the second column.

Column #1 Column #2 Genotypes Protein Phenotypes FFBB Dark brown FFBb Brown FFbb Brown FfBB Brown FfBb Dark Blue Ffbb Dark Blue ffBB Light Blue ffBb Light Blue ffbb Pale blue Place your baby's genotype for eye color in the data table.

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