PRESIDENT GEORGE W. BUSH Message Board

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Politics : PRESIDENT GEORGE W. BUSH

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To: Neocon who wrote (25007)	7/20/2000 3:46:12 PM
From: TigerPaw	Read Replies (1) of 769667

one simply takes what comes and makes the best of it, Every major exctinction event has left a very different set of creatures to evolve than the families that were dominant before the event. I would guess the first things to rebound would be algae, bacteria, carrion insects and animals, and quick growing plants. These would spread quickly and provide an abundant food source for which ever creatures were still lucky enough to hang on until then. They would at that time still have their whole gene toolbox available. In a time of plenty there is no pressure to reduce the toolbox size as almost any reasonable variation will survive and thrive. (A gene toolbox is all the genes represented by a species and not just those in an individual of the species). I'm sure that most mammals, for example, are decended from just a couple of species of rats that lived while the dinosaurs died. TP (In biological evolution a species never looks ahead and makes a choice about what it should evolve into, or what litter size to have, or how much to compete with it's neighbors. The ones that just happen to survive and reproduce better supply the next generation)

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