6. A. H. Freedman et al., PLOS Genet. 10, e1004016 (2014).
Dogs and wolves diverged 11,000-16,000 years ago, the authors conclude. A severe reduction in the population (a bottleneck) of wolves occurred shorly thereafter. They traced the ancestry of the amylase gene, a gene that allows dogs to eat starchy foods. Their data showed that dogs were mostly carnivores when they were first domesticated, which supports the theory that dogs were domesticated by hunter-gatherers, rather than starch-loving farmers.
