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This is actually an article on rex cat breeds. The title of the article has been changed from Rex Cats to Rex Mutation, but this is a bad idea as this is not an article on rex mutations. An article on rex mutations would cover all rex mutations, not just those in cats, but also those in other animals. It would also describe the way in which the genes work etc. Even if this were supposed to be an article of rex mutations in cats then it would need to specify which breeds of cat have been developed from which mutations. Of the various feline rex mutations, there are two rex mutations in cats which have both given rise to two recognised breeds: the r gene which first gave rise to the German and then the Cornish Rex, and the Lp gene which first gave rise to the LaPerm and then gave rise to the SKookum. Either the Skookum and the Cornish Rex are removed from this article or we take an approach in which all recognised breeds derived from a mutation are covered. This latter option would be the logical one. Quincunxcats 16:03, 21 June 2007 (UTC)
The Skookum has the same exact genetic mutation as the LaPerm and should not be represented in this article as being a different mutation. It's the same mutation, used in a different breed developed by crossing a LaPerm. Only independent rex mutations should be listed. pschemp | talk 01:36, 13 June 2007 (UTC)
The article needs to be about rex mutations generally, and has moved in that direction now, including lots of non-felines. The lead needs to be rewritten so that it reflects this, and the cat-specific material moved to a section on cats. Moving the article back to Rex cat would violate WP:SUMMARY - we create generalist articles (and merge overly-specialist ones to form them, if necessary), and only split them into increasingly specific sub-articles when this is actually useful to the readers. Quincunxcats is right that logically we should be inclusive here.
All rex cats have one of the same couple of rex mutations, in combination with other genes for hair length, etc., and various species often have what amounts to the same rex mutation, in the same way that most forms of albinism across species are essentially the same (even weird ones like Chediak-Higashi syndrome frequently exist across species, though there are of course exceptions, like the lack of a human equivalent of the Siamese point coloration gene, which is a type of albinism). There is nothing wrong with naming all of the affected cat breeds; indeed, leaving one out would mislead and confuse our readers. Pschemp, if you're simply reiterating that the article was focusing too much on cats in particular, that issue was already raised above, and is addressed by adding information on other aspects of the subject, not dumbing down the article by deleting accurate material just because it's not about the aspect that interests you. If there are, say, three breeds of hamster with a rex mutation and two of them are derived from an older founder breed, there is likewise no reason we would not list all three of them here (if they don't all have articles and probably never will, use common sense and simple prose: [[Curly Hamster]] (and the related Wrinkly Hamster and Aquatic Curly Hamster). This is not rocket science. :-) — SMcCandlishTalk⇒ ʕ(Õلō)ˀContribs. 00:41, 19 November 2011 (UTC)