I think this is incorrect, the most recent source I’ve read on the subject indicated that nearly the entire gene diversity out of all breeds of dogs is just a subset of the gene diversity that already existed in grey wolves.
The success in developing tame silver foxes with only a few generations of selective breeding suggests that domestic traits can be bred into canines without additional mutation just by imposing selection effects to sort for genes already existing within their population.
To identify genetic changes underlying dog domestication and reconstruct their early evolutionary history, we generated high-quality genome sequences from three gray wolves, one from each of the three putative centers of dog domestication, two basal dog lineages (Basenji and Dingo) and a golden jackal as an outgroup. Analysis of these sequences supports a demographic model in which dogs and wolves diverged through a dynamic process involving population bottlenecks in both lineages and post-divergence gene flow. In dogs, the domestication bottleneck involved at least a 16-fold reduction in population size, a much more severe bottleneck than estimated previously. A sharp bottleneck in wolves occurred soon after their divergence from dogs, implying that the pool of diversity from which dogs arose was substantially larger than represented by modern wolf populations. We narrow the plausible range for the date of initial dog domestication to an interval spanning 11–16 thousand years ago, predating the rise of agriculture.
I think this is incorrect, the most recent source I’ve read on the subject indicated that nearly the entire gene diversity out of all breeds of dogs is just a subset of the gene diversity that already existed in grey wolves.
WIkipedia also supports the contention that dogs are extracted directly from grey wolves a few tens of thousands of years ago, too recently for them to have diverged from some meaningfully distinct common ancestor.
The success in developing tame silver foxes with only a few generations of selective breeding suggests that domestic traits can be bred into canines without additional mutation just by imposing selection effects to sort for genes already existing within their population.
This claims otherwise. Notably:
To identify genetic changes underlying dog domestication and reconstruct their early evolutionary history, we generated high-quality genome sequences from three gray wolves, one from each of the three putative centers of dog domestication, two basal dog lineages (Basenji and Dingo) and a golden jackal as an outgroup. Analysis of these sequences supports a demographic model in which dogs and wolves diverged through a dynamic process involving population bottlenecks in both lineages and post-divergence gene flow. In dogs, the domestication bottleneck involved at least a 16-fold reduction in population size, a much more severe bottleneck than estimated previously. A sharp bottleneck in wolves occurred soon after their divergence from dogs, implying that the pool of diversity from which dogs arose was substantially larger than represented by modern wolf populations. We narrow the plausible range for the date of initial dog domestication to an interval spanning 11–16 thousand years ago, predating the rise of agriculture.