If you have two "hets" for snow mate, there is a CHANCE you will get some snows in the litter, but not a guaranteed chance. Basically, whenever one of these boas were born, either the mom or the dad was a snow (or a PROVEN
het for snow) and some of its syblings might have been visibly snow, but perhaps not... either way, there WOULD be some
hets in the litter, but there could be no way to visibly tell...so you really don't know if they are or not.
Plus, I *think* (someone please correct me if I'm wrong) that you can only get a snow with an aneryxamel (albino) pairing. Even if they are "het" snow, I dont know if you can necessarily produce snows...probably
anery's or albinos. At least, that's how it works in Kenyan sand boas...