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Chapter 1 and 17 - Chapter 1 Racial Classification o The...

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Chapter 1: Racial Classification o The attempt to assign humans to discrete categories based on common ancestry o Humans use skin color to determine o Humans have not been isolated enough from one another to develop such discrete categories like some animals have o Races are supposed to reflect similarities in genotype that a certain population share Instead they reflect PHENOTYPE—these similarities and differences don’t necessarily have a genetic basis o Biological similarity doesn’t necessarily indicate recent common ancestry It is not possible to define human races biologically o Natural selection can account for differences in skin color in varying places Darkness of skin is a selective factor in places where UV radiation is very strong like Africa Light skin is a disadvantage Another selective factor is the synthesis of vitamin D in the body There has been selection against dark skin in the northern areas because melanin screens out UV radiation Chapter 17: Assigning Racial Status In America: Descent o It assigns social identity on the basis of ancestry Aka If someone has any known black ancestor no matter how remote—they are classified as black o This rule is rare outside the U.S. Hypodescent o The name for America’s rule of descent o It automatically places the children of a union between members of different groups into the Minority group o Hypo means lower o This divides America in groups that have been unequal in their access to wealth, power, and prestige Race In Japan
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