Wednesday, January 7, 2009

Evolution - Survival of the Fittest

When you consider the centralization of the nervous system as an evolutionary trend and the unlikeliness that a single change confers a tangible change in fitness, it becomes more obvious that one need not be more fit but just not the least fit. This allows for the propagation of some sort of neutral adaptations, while allowing longer-term adaptations that require multiple changes in a lineage, such as nervous system centralization.

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