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2.1. Biological evolution theory
2.1.1 Darwin's Theory of Evolution
Natural selection acts to preserve and accumulate minor advantageous genetic mutations.
Darwin's theory of evolution asserts that all life is related and has descended from a common ancestor. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic "descent with modification". That is, complex creatures evolve from more simplistic ancestors naturally over time. While Darwin's theory of evolution is relatively young, the evolutionary worldview itself is as old as antiquity. Ancient Greek philosophers such as Anaximander postulated the development of life from non-life and the evolutionary descent of man from animal. Charles Darwin simply brought something new to the old philosophy - a plausible mechanism called "natural selection." Natural selection acts to preserve and accumulate minor advantageous genetic mutations. When a member of a species develops a functional advantage, its offspring would inherit that advantage and pass it on to their offspring. The inferior members of the same species would gradually die out, leaving only the superior members of the species. Natural selection is the preservation of a functional advantage that enables a species to compete better in the wild.