ANTHRO 101 Lecture Notes - Lecture 13: East Los Angeles College, Melanoma, Ultraviolet
Document Summary
Gradation in a character or gene frequency over geo distance. Create a range of values for a trait and find how populations vary. Only looking at one trait at a time. Looking at different trait distributions requires making totally different maps. We using valid, scientifically measurable analyses, not typologies. This is hard because there"s always intermixing. But it"s still a better alternative because it"s a flexible unit of analysis that can be expanded or contracted depending on the goals of the study. But remember skin color is distributed into a spectrum, not discrete types. *darker skin in the south and lighter north. *high levels of melanin are associated with darker pigment. The more melanin, the darker the skin. But there"s a genetic limitation on how dark or light someone can get. Sun burns, skin cancer (malignant melanoma), folate destruction (affects reproductive) So need more melanin, shield off your folate from getting destroy.
