Sorry, one more point I should have added to my last post.
 
Humans have been selectively breeding plants and animals for thousands
of years without the aid of DNA, submicron electroscopes, cloning, or
submolecular gene splicing.
 
wild plants like wheat and corn have been bred for thousands of years to
produce things like resistance to insects,plant viruses, fungi etc, and
too produce higher yields, on less then perfect soil conditions etc..
 
simply by "selective breeding", any crop that did not live up to
expectations was not reseeded the next year.. and any crop that exceeded
expectations was used as the only source for reseeding..
 
recessive "defective" genes where simply bred out of the "bloodline"
 
You don't find two separate corn growers interbreeding their corn and
suddenly finding a crop with the same problems crops had thousands of
years ago, because there is simply no recessive genes for that particular
problem still in existence.
 
(baring new and spontaneous mutations)
 
Darrin
[Posted in FML issue 4669]