Let’s start over, I'll try again.
The study claims they tested 12 wolves and found none of them had the gene/genes that help in digesting starch. It doesn’t tell us much about these wolves, and there are a few different types, gray wolf being most common, I believe. They also claim to have tested 60 dogs all of whom had the gene/genes. Well, there are over 500 hundred different breeds (over 150 AKC), though some not as common as others.
That’s only 12 out of how many of all the wolfs worldwide over some 10,000 years. I can’t help but, wonder if that gene sequence is or has been (many times) present, somewhere in the wolf population over that period of time. I also have to wonder if by manipulating the diets of dogs (feeding them like wolves maybe) that gene sequence could be reversed, if that hasn’t happened or if there are some breeds in whom it was never present.
Wolf man said his English was limited and I think he may have made a good point. I don’t want to speak for him, but I understood him differently than some other posters. I think they jumped to conclusions, not really supported, without enough facts given the adaptability of canines. In short their numbers are way to small to support their claims.
There have also been Coyote crosses (in the wild) to consider, that could play a factor, were they?