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#15
08-17-2011, 02:53 AM
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Evolutionary impulses are twofold: to survive (food, shelter, safety, warmth), and to mate. Ensuring the survival of mates, friends, and family are advantageous from both perspectives, but not so much if the individual dies in the process, then only for the group as a whole, while any specific organism will attempt to pass on its own DNA - that is why more desirable traits become more common, because more will survive to do so.
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