**It seems like a lot of people merely buy from established breeders then put two and two together to produce in-demand morphs.**
I don't think that it is bad as in the 1990's when you bought a pair of anything, they were siblings. I believe that today there has been plenty of outcrossing.
**Are WC only bred in the search for new morphs or are they routinely used for outcrossing?**
In my case I can't use WC from Arizona since I live in Arizona. Not allowed to sell snakes from Arizona or captive bred. I can't even sell captive bred babies that have Arizona stock in them.
In my case I do have a few WC cal kings. A female from Carlsbad, and a pair from Lake Elsinore. I do have some locale specific cal kings but they are siblings I'm sure, my Mendotas and Davis hypermelanistics. These are captive bred.
I know that my Ghost (Palomar) have been out crossed by Brian from B.H.B. because my female is het for Ghost. I've bred my Ghost for three years now and have not bred them together. And I have bred them to other recessive genes.
There are times that I breed back in attempts to produce a certain morph, but since I am always in search of something new...I am out breeding quite a bit.
I do keep records of who bred to who and I can tell people that buy my snakes if they are related (siblings, cousins, etc..) or if they are from the same blood line, or if they are not related in the least.
I've acquired my cal king collection from quite a few different people so the odds of them being related is rare. This is unlike the problem with other species that were imported into the United States and have a very small gene pool no matter who you buy them from.
Kerby...