The main thing with the pieds is if they are compatible, so if they are compatible I would think you’d have a chance at visual pieds in the first generation. I would think they’re compatible since pied is found in a lot of animals ranging from birds, horses and if you can believe it reptiles lol. And if they’re found in so many species and have the same effect on every species I’d think with two somewhat similar species (bps and retics) the mutation would be located in the same place.
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