Color blindness is added the majority will say that a match has been achieved. Finally, as yet more red is added, the remaining, protanomalous, observers will declare a match at a point where normal observers will see the mixed light as definitely reddish. Protanopia, deuteranopia, protanomaly, and deuteranomaly are commonly inherited forms of red-green color blindness which affect a substantial portion of the human population. Those affected have difficulty with discriminating red and green hues due to the absence or mutation of the red or green retinal photoreceptors. It is sex-linked: genetic red-green color blindness affects males much more often than females,
Saxon Colour pigeons Saxon Colour pigeons The Saxon Colour pigeons are a group of Saxon breeds of fancy pigeons developed over many years of selective breeding. Saxon Colour pigeons, along with other varieties of domesticated pigeons, are all descendants from the rock pigeon ("Columba livia"). Saxon Colour pigeons are a combination of various varieties which are basically the same type differing only in colour and markings. Some varieties include: "Saxon Breast pigeon", "Saxon Monk" (pictured), "Saxon Priest", "Saxon Reversewing", "Saxon Shield", "Saxon Spot" and "Saxon Whitetail". Saxon Colour pigeons have similar colour varieties to the Thuringian Colour pigeons but the Saxons are all