"If these anomalies are seen by the breeder, and then the said animals (and parents) are not allowed to breed or culled completley for humane reasons. Wouldnt this be the same as natural selection or are the variables of nature much more complex?"

No, and yes. When animals are bred to first degree relatives (f.i. brother to sister), each generation they loose 25% of their genetic variability on average. Visible anomalities are easy targets for selection, but it's the loss of genetic variability and thereby the accumulation of countless minor genetic defects which in the end will cause the demise of any linebred bloodline. Some will be sooner, some will be later, but the outcome is inevitable.
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I'm Dutch. Somebody shoot me.

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• Question about genetic diversity - spyiii, Mon Dec 21 01:54:54 2009
• RE: Question about genetic diversity - hermanbronsgeest, Mon Dec 21 02:28:09 2009
• RE: Question about genetic diversity - spyiii, Mon Dec 21 23:47:32 2009
• RE: Question about genetic diversity - hermanbronsgeest, Tue Dec 22 03:02:43 2009
• Thanks. . .np - spyiii, Tue Dec 22 16:11:52 2009
• RE: Question about genetic diversity - metalpest, Fri Dec 25 00:48:02 2009