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The Evolutionary Theory Of Natural Selection

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Charles Darwin, an English naturalist developed the evolutionary theory. Evolutionary theory explains how all organisms and humans, evolved from a common ancestor by a process called Natural selection. “Natural selection works by preserving variations which are useful (Downe House, 2015, tour)”. That is to say that natural selection is a natural process and mechanism in evolution that happens gradually overtime. The evolutionary theory makes up the foundation of evolutionary medicine. According to Nesse,” Its application to medicine, known as evolutionary or Darwinian medicine, uses an evolutionary perspective to understand why the body is not better designed and why, therefore, diseases exist at all (2001, p.358).” In other words evolutionary

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