The Big Bang Theory

[Crazy Asian]

no melanin is pigement go reasearch it. And melanin cancer is the disorder.

In humans, melanin is found in skin, hair, the pigmented epithelium underlying the iris, the medulla and zona reticularis of the adrenal gland, the stria vascularis of the inner ear, and in pigment bearing neurons of certain deep brain nuclei such as the locus ceruleus and the substantia nigra. Melanin is the primary determinant of human skin color.

[Spectic Tank]

no melanin is pigement go reasearch it. And melanin cancer is the disorder.

In humans, melanin is found in skin, hair, the pigmented epithelium underlying the iris, the medulla and zona reticularis of the adrenal gland, the stria vascularis of the inner ear, and in pigment bearing neurons of certain deep brain nuclei such as the locus ceruleus and the substantia nigra. Melanin is the primary determinant of human skin color.

way to quote wikipedia...but i guess you forgot to keep reading the article. They say that different types of melanin is found in different races, and the amount of melanin in your skin determines the color of your skin. It also says that melanin is thought to protect the body from uv light, so if a race of people are ore exposed to the sun then their skin can contain more melanin to protect the skin, and this is passed down genetically.