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Politics : Evolution -- Ignore unavailable to you. Want to Upgrade?

To: LLCF who wrote (1440)	6/20/2006 10:57:06 AM
From: TigerPaw	Read Replies (1) \| Respond to of 69300

something profoundly simple will probably become apparent as usual. The rapid change, the punctuated phase of evolution, is just the flip side of the equilibrium. Whenever the selection process is not random then the species will repeatedly get selected for that trait and change. There are other factors that promote rapid change included the isolation of a rather small population so that the changes are not swamped by a large pool of genes traded during sex. After a catastrophe both of these processes tend to be in place. The species is greatly reduced in number, and the survivors are presented with the stress of loss of habitat, coupled with new open habitat vacated by other lifeforms that were completely displaced during the catastrophe. This means that small advantages do become important for survival and at the same time the survivers produce a much larger percentage of the next generation. It is not generally the case that there is more mutation or variation, only that the variations are consistently selected for similar characteristics. TP