Your pups don't just take after there parents, they have grand parents, great grand parents, and so on. Pups can come out looking like an ancestor and you won't be the wiser.
To a certain degree, yes. I mean.... I'm not gonna get a pup that looks like a pure redbone just because their great grandad was 100% redbone. And I know for a fact your not gonna get a double glass eyed pup when one of the parents is 100% BMC. Both parents MUST at a minimum carry the recessive glass eye gene to get a double glass eye pup.
