Human skin color ranges in variety from the darkest brown to the lightest hues. An individual's skin pigmentation is the result of genetics , being the product of both of the individual's biological parents ' genetic makeup, and exposure to sun. In evolution, skin pigmentation in human beings evolved by a process of natural selection primarily to regulate the amount of ultraviolet radiation penetrating the skin, controlling its biochemical effects. The actual skin color of different humans is affected by many substances, although the single most important substance is the pigment melanin. Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin color of darker-skinned humans. The skin color of people with light skin is determined mainly by the bluish-white connective tissue under the dermis and by the hemoglobin circulating in the veins of the dermis. The red color underlying the skin becomes more visible, especially in the face, when, as consequence of physical exercise or the stimulation of the nervous system anger, fear , arterioles dilate. There is a direct correlation between the geographic distribution of ultraviolet radiation UVR and the distribution of indigenous skin pigmentation around the world. Areas that receive higher amounts of UVR, generally located closer to the equator, tend to have darker-skinned populations.
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Skip to Content. Lee is a middle class white male with no black female friends, rare interactions with black families growing up, and who states his interactions with black women only consist of work-related experiences. Yet, he expresses strong negative views of black women as unattractive and uneducated as the first thoughts that come to his mind. This quote by Lee and several other white m ale respondents in this essay dispute notions that only a few highly identifiable, old, deep-south bigots hold strong deep seated racialized views of black women. These expressions by white male respondents are indicative of the consistent exclusion of black women as relationship partners by white men, and representative of a powerful mental processing at play that goes beyond the limited language of stereotype. Census data and interracial dating studies show a longstanding persistent trend of black women as an excluded heterosexual relationship partner for white men and other men of color Quian and Litcher ; Phua and Koffman ; Yancey
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