Discusses the theory that human evolution is a result of the interplay between genes and the environment.
Written in 2002; 2,405 words; 11 sources; MLA; $ 73.95
Paper Summary:
Biologist E. Mayr put forth a theory that interplay between human genes and their environment contributes to human evolution. He believes this sets narrow limits on allowable evolutionary changes within a species. The paper shows that developmental biologists believe that the genes active early in development are the oldest acquired genes, while those active in the later stages of development are more recently acquired genes. In this respect, changes in the older genes would have more serious deleterious effects in the individual than changes in the newer genes. This paper produces support for this theory on human evolution by providing examples of human and other mammal development.
From the Paper:
"Engels (2) uses the example of human hands to explain the idea of human evolution. He believes that hands are the "perfected product of hundreds of thousands of years of labor. The endless adaption of new manual operations allowed human hands to become indispensable tools." Engels postulates that as apes evolved into man, they adopted an upright posture and began using their hands for purposes other than walking. Even though monkeys used their hands for holding food, clubs to attack their enemies, etc., none has the capacity for using their hands that man does. Since even primitive man was able to fashion tools and spear heads, and even simple jewelry, the muscles, ligaments, and bones must have evolved over time to allow their use in more complicated tasks."
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