Phenotypic classification of eye color in female and male adults of the indicated genotypes. Flies were sorted into five classes on the basis of eye color, representing the number of pigmented ommatidia: class 1 = 0%; class 2 = 1%10%; class 3 = 10%75%; class 4 = 75%99%; class 5 = 100%. See alsoFigure S1.