The origin of the domestic dog is not clear. The domestic dog is a member of the genus Canis, The ancestors of humans and dogs ultimately met in Eurasia. .. The ancient specimens were radiocarbon dated and stratagraphically dated, and together with DNA sequences a "Core questions in domestication Research". In the story of how the dog came in from the cold and onto our sofas, we tend to give ourselves But when we look back at our relationship with wolves throughout history, this doesn't really make sense. Humans have a long history of eradicating wolves, rather than trying to adopt them. . Take the Quiz. Humans having sex with animals is called bestiality, and it isn't nearly as put the prevalence of men and women having intimate relations with animals at have received dozens of questions, and comments on these questions, over the years. Read: User question "Is it ok if I have sex with my pet dog?".
Using the 7, YBP specimen and this mutation rate, the dog-wolf divergence time is estimated to have occurred 36, YBP and this is consistent with the timing found with the Taimyr-1 specimen in an earlier study. The study identified six major dog yDNA haplogroups, of which two of these include the majority of modern dogs. The Newgrange dog fell into the most commonly occurring of these haplogroups. The two ancient German dogs fell into a haplogroup commonly found among dogs from the Middle East and Asia, with the Kirschbaum dog sharing a common male lineage with the extant Indian wolf.
The study concluded that at least 2 different male haplogroups existed in ancient Europe, and that the dog male lineage diverged from its nearest common ancestor shared with the gray wolf sometime between 68, YBP. Studies of modern grey wolves have identified distinct sub-populations that live in close proximity to each other.
5 key moments in the fascinating history of humans and dogs | From the Grapevine
Where the genetic divergence of dog and wolf took place remains controversial, with the most plausible proposals spanning Western Europe,   Central Asia,   and East Asia. Ina study of the maternal mitochondrial genome indicated the origin in south-eastern Asia south of the Yangtze River as more dog haplogroups had been found there.
Ina study using single nucleotide polymorphisms indicated that dogs originated in the Middle East due to the greater sharing of haplotypes between dogs and Middle Eastern gray wolves, else there may have been significant admixture between some regional breeds and regional wolves. Ina study of maternal mDNA indicated that the dog diverged from its ancestor in East Asia because there were more dog mDNA haplotypes found there than in other parts of the world,  but this was rebutted because village dogs in Africa also show a similar haplotype diversity.
Then, one of these lineages migrated back to northern China and admixed with endemic Asian lineages before migrating to the Americas. Ina study looked at 85, genetic markers of autosomalmaternal mitochondrial genome and paternal Y chromosome diversity in 4, purebred dogs from breeds and village dogs from 38 countries.
Some dog populations in the Neotropics and the South Pacific are almost completely derived from European stock, and other regions show clear admixture between indigenous and European dogs. The indigenous dog populations of Vietnam, India, and Egypt show minimal evidence of European admixture, and exhibit indicators consistent with a Central Asian domestication origin, followed by a population expansion in East Asia.
The study could not rule out the possibility that dogs were domesticated elsewhere and subsequently arrived in and diversified from Central Asia. Studies of extant dogs cannot exclude the possibility of earlier domestication events that subsequently died out or were overwhelmed by more modern populations. Ina whole-genome study of wolves and dogs concluded that admixture had confounded the ability to make inferences about the place of dog domestication.
Past studies based on single-nucleotide polymorphisms genome-wide similarities with Chinese wolves,  and lower linkage disequilibrium  might reflect regional admixture between dogs with wolves and gene flow between dog populations, with genetically divergent dog breeds possibly maintaining more wolf ancestry in their genome.
The study proposed that the analysis of ancient DNA might be a better approach. The advent of rapid and inexpensive DNA sequencing technology has made it possible to significantly increase the resolving power of genetic data taken from both modern and ancient domestic dog genomes. Attention was now turned to studies based on ancient DNA from fossil canids.
Ina study analysed the complete and partial mitochondrial genome sequences of 18 fossil canids dated from 1, to 36, YBP from the Old and New Worlds, and compared these with the complete mitochondrial genome sequences from modern wolves and dogs. Phylogenetic analysis showed that modern dog mDNA haplotypes resolve into four monophyletic clades with strong statistical support, and these have been designated by researchers as clades A-D.
This group of dogs matched three fossil pre-Columbian New World dogs dated between 1, and 8, YBP, which supported the hypothesis that pre-Columbian dogs in the New World share ancestry with modern dogs and that they likely arrived with the first humans to the New World.
- Origin of the domestic dog
- 5 key moments in the fascinating history of humans and dogs
However, this relationship might represent mitochondrial genome introgression from wolves because dogs were domesticated by this time. Clade D contained sequences from 2 Scandinavian breeds JamthundNorwegian Elkhound and were sister to another 14, YBP wolf sequence also from the Kesserloch cave, with a common recent ancestor estimated to 18, YBP.
Its branch is phylogenetically rooted in the same sequence as the "Altai dog" not a direct ancestor. The study found that the skulls of the "Goyet dog" and the "Altai dog" had some dog-like characteristics and proposed that the may have represented an aborted domestication episode. If so, there may have been originally more than one ancient domestication event for dogs  as there was for domestic pigs. The theory is that the extreme cold during one of these events caused humans to either shift their location, adapt through a breakdown in their culture and change of their beliefs, or adopt innovative approaches.
However, dramatic differences in genetic diversity can be influenced both by an ancient and recent history of inbreeding.
Origin of the domestic dog - Wikipedia
Ina study looked at the mitochondrial control region sequences of 13 ancient canid remains and one modern wolf from five sites across Arctic north-east Siberia. The fourteen canids revealed nine mitochondrial haplotypesthree of which were on record and the others not reported before.
The phylogentic tree generated from the sequences showed that four of the Siberian canids dated 28, YBP and one Canis c. Closely related to this haplotype was one that was found in the recently-extinct Japanese wolf. Several ancient haplotypes were oriented around S, including Canis c. Given the position of the S haplotype on the phylogenetic tree, it may potentially represent a direct link from the progenitor including Canis c. But where does that unique symbiosis begin, one that has long involved even the sharing of parasites and certain diseases?
According to Losey, the biochemical bonding impulse is only one part of the story. His own research is focused on teasing out the cultural forces over time that have made dogs and humans such a good fit.
Researcher explores close prehistoric relationship between humans and dogs
One of Losey's projects involves the excavation of dog remains between 5, and 8, years old at Lake Baikal, Siberia, the deepest freshwater lake in the world. What's striking about the find is it reveals dogs were buried alongside humans in cemeteries, pointing not only to some of the earliest evidence of dog domestication but also suggesting dogs were held in the same high esteem as humans.
Dogs seem to have a very special place in human communities in the past. As soon as we see skeletal remains that look like the modern dog—say 14, years ago—we see dogs being buried. Clearly, people long ago began breeding dogs for specific purposes.
The wolves likely foraged around human campsites, gradually growing less inhibited. Once their potential as companions and workmates became apparent, they were domesticated and selectively bred.Mankind The Story of All of Us: Domesticating the Dog - History
Somewhere between 10, and 15, years ago, the wolf had evolved into an animal genetically indistinguishable from the modern dog. Though today's dog is closer genetically to its ancient ancestor than to the modern wolf, most specific dog breeds have roots that go back only about years.