Thank you for the nice replies. I don't believe it is a genetic form that is passed on. It just kind of shows up in snakes, but I am told it is pretty rare. My daughter pulled the snake from the egg box. She sent me a pic and told me one of the snakes has black magic marker on it and it would not come off. I new immediately what it was. I can't wait to see it in person. From some other pics I have seen there are a bunch of pin size black dots all over the body of the snake. I hope it is a male.....