Whats with all the prejudice and hate. As mentioned above, its very common in nature. So why do folks jump to stupid conclusions. Then rant about inbreeding. I have to tell you wild snakes INBREED, its what they do. But, that is not the point, Its normal in nature. As is divided ventrals.
When doing field work, We look for individual differences in scalation. And that is one of those areas. The ventrals and caudals are unique to each individual.
This is not about you specifically Mark, but before accusations get tossed around, folks need to know what normal is.