Well, first of all The Color Purple falls under the broadest genre of fiction. The three primary genres are poetry, drama, and fiction.
Hair color is determined by two different forms of pigment: eumelanin (which is the largest influence) and phenomelanin. Eumelanin is a black pigment, and phenomelanin is a red or yellow pigment. Hair color is determined by three factors having to do with pigments: how much pigment is present, to what degree a eumelanin or phenomelanin is present and how close together the melanin (pigment) granules are. The more eumelanin a person has, the darker his hair will be.
Hereditary hair color and how parents determine a baby's hair color. Have you even been happily people gazing in the park, when you spot a family that you can t take your eyes off? The father has brown hair, the mother has black hair, the son has ginger hair and the daughter is blonde.