31. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin. 32. When Liver is combined with Merle, the eumelanin ( black ) pigment is further diluted in random patches. 33. :: Eumelanin , much more so than phaeomelanin, is the principle mechanism of UV protection in skin. 34. A rabbit's coat only has two pigments, pheomelanin ( yellow ) and eumelanin ( dark brown ). 35. When eumelanin is present, it is restricted in varying degrees by the action of " Asip ". 36. It is caused by higher levels of the natural dark pigment eumelanin , and lower levels of the pale pigment pheomelanin. 37. More pheomelanin creates a more golden or strawberry blond color, and more eumelanin creates an ash or sandy blond color. 38. "Extension " controls whether or not true black pigment ( eumelanin ) can be formed in the hair. 39. Fossilised skin pigmented with dark-coloured eumelanin reveals that both leatherback turtles and mosasaurs had dark backs and light bellies. 40. It is the levels of these enzymes within a melanocyte that determines whether the cell will create eumelanin instead of pheomelanin.
