A banded and a striped from the same population is of the same genotype. If bred is not a cross. A banded from Northern L.A. county or from where Kerby lives or Oregon, when bred to a San diego striped, is a cross. The latter is not of the same genotype.
A genetic cross is breeding any two animals that are not of the same genotype.
The problem is with snakes of the same species, its harder to define what a genotype is. So to give you a general idea, a genotype is animals that could have bred in nature(same locality)
So, Cal kings like Vista kings, Newport kings, Temecula kings, Brea kings, etc, are genetic types of cal kings. With other kings like, Big hill alterna, Luna Vista alterna, Sanderson alterna, Black gap, etc etc etc, are genetic types of greybands.
Each of these genotypes has its own unique characteristics, in color and pattern as well as scalation. I.E. different scale counts.
Consider, I have nothing against crossing genotypes or even species or genera, hahahahahahahaha I would love to see a monkeymonitor, hahahahahahahaha You just need to understand what a cross is and make sure you identify them as such.
Again consider, any snake bought over the internet or from a reptile shop, then bred results in a cross. The reason is, you have no idea of its genetic history. I imagine all morphs(like kerbys) are indeed crosses, as they were derived from crossing different locality genotypes. They were crossed to express traits that were not normal. See what I mean? Cheers