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Politics : PRESIDENT GEORGE W. BUSH -- Ignore unavailable to you. Want to Upgrade?

To: Neocon who wrote (24896)	7/19/2000 6:22:34 PM
From: TigerPaw	Read Replies (2) \| Respond to of 769667

, the toolbox is full of useless and misshapen items....... This is true, there are many unused tools in the genome of the more complex creatures (such as humans). That's were selection can get powerfull enough to create a new species instead of just a variation. Sicle-cell syndrome is a common example for this phenomina. It just so happens that a misshapened blood cell is less likely to be affected by malaria parasites. This is one of those random changes that just happened to find a use and is still not very well adapted to the host or parasite, but provides a small and steady selection event. In the absence of medicine and mosquito control I would expect new mutations to become prevalent in the affected population such as different arterial dimensions or further modification to the shape of the cells. TP