It’s not that whites in and of themselves will improve the breed. It’s that sometimes a white puppy is the best puppy in the litter, and breeders should have the choice to utilize their best puppies to carry on those good genes to future generations. 

Again, it’s about choosing the best puppy from the litter, regardless of marking pattern. Maybe the white puppy is the only one that is DM clear, or has the lowest flow rate, or consistently hotlers with zero VPCs. If the Boxer breed is plagued with health problems, do we really want to discard any genes for good health? 

The Boxer community has not yet embraced genetic diversity as a whole, so we don’t have definitive answers, but it stands to reason that the more we remove dogs from the gene pool, the more genes we remove as well. While puppies in a litter have similar genetics, they do not have the exact same combination of genes — any one of those puppies might possess the last copy of an uncommon gene, and it that puppy isn’t bred, the gene will be lost. Clearly there will always be that risk, since not every puppy in every litter will be bred. Sometimes, however, the only reason a puppy isn’t bred is because of its marking pattern; we can at least increase the odds of not discarding uncommon genes (thereby reducing diversity) for a purely cosmetic reason. 

No. Not only have we in the US been breeding whites in a genetic sense, every time we breed a flashy Boxer, but plenty of people have been breeding white Boxers outright for decades. We’re not speaking only of the “basement white bitch” of ABC lore, but also of those non-ABC member breeders who don’t care what the Code of Ethics has to say about white Boxers. While their dogs may have issues, we can look at the genetics and see that the white marking gene doesn’t behave any differently than when it comes from a flashy Boxer, and it doesn’t add or subtract anything from the dog’s health, structure, or temperament. 

No. Non-members already aren’t constrained by, and most often don’t care about, the ABC Code of Ethics. Just as allowing white puppies to live, and then to be sold, and then to be given limited registration, did not result in an overabundance of white Boxers produced by non-members (and, in fact, essentially eliminated the marketing of “rare white Boxers”), allowing them to be bred is not likely to have any impact on the non-ABC community.