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Cultural interactions result in both progressive and aggressive interactions due to the evolution of those cultures being uninfluenced by one another. What may the...

Cultural interactions result in both progressive and aggressive interactions due to the evolution of those cultures being uninfluenced by one another. What may the ethnographic interview james spradley pdf considered good etiquette in one culture may be considered an offensive gesture in another. As this occurs constantly, cultures push each other to change. The biological variations between humans are summarized in the ideas of natural selection and evolution.


Human variation is based on the principle that there is variation in traits that result for recombination of genes from sexual reproduction. These traits are variable and can be passed down generation to generation.

It also relies on differential reproduction, the idea that the environment can’t support unlimited population growth because not all individuals get to reproduce to their full potential. An example of human variation can be found with a cline. Human skin color variation is a selective adaptation that relates to the populations’ proximity to the equator.

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