just my opinion....Im not a geneticist by no means. But by definition of recessive, what makes an actual pied animal a pied animal is the having both the genes and physically expressing it. Not all het pieds have the "markers". Ive seen some that look just like normals! So what about that? And what about albinos? Are there markers for het albinos? None that I know of. And even though leopards react with pieds, doesn't mean they are the same gene, imo. Same is true with toffees and albinos. They will combine with each other, but each morph by itself LOOKS different.