Close up of a blue human iris. Eye color is a polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.
A simple Caesar salad. A Caesar salad is a salad of romaine lettuce and croutons dressed with parmesan cheese, lemon juice, olive oil, egg, Worcestershire sauce, anchovies, garlic, and black pepper. It is often prepared tableside. 1 History.
1 In a blender or food processor, blend together the egg, lemon juice, mustard, fine sea salt, and freshly ground white or black pepper, blending until well combined.2  With the motor still running, add the oil in a very slow, thin, steady stream and blend until the dressing is thick and smooth.reparation. 1  In a blender or food processor, blend together the egg, lemon juice, mustard, fine sea salt, and freshly ground white or black pepper, blending until well combined.