The Big Search to Find Out Where Dogs Come From - The New York Times - 0 views
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scientists are still debating exactly when and where the ancient bond originated
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he essence of the idea is that people actively bred wolves to become dogs just the way they now breed dogs to be tiny or large, or to herd sheep.
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Wolves are hard to tame, even as puppies, and many researchers find it much more plausible that dogs, in effect, invented themselves.
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gradually evolved to become tamer and tamer, producing lots of offspring because of the relatively easy pickings
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researchers question whether dogs experience feelings like love and loyalty, or whether their winning ways are just a matter of instincts that evolved because being a hanger-on is an easier way to make a living than running down elk.
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dogs and wolves interbreed easily and some scientists are not convinced that the two are even different species
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“Maybe dog domestication on some level kicks off this whole change in the way that humans are involved and responding to and interacting with their environment,
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most dog breeds were invented in the 19th century during a period of dog obsession that he called “the giant whirlwind blender of the European crazy Victorian dog-breeding frenzy.
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based on DNA evidence and the shape of ancient skulls, that dog domestication occurred well over 30,000 years ago.
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will be able to determine whether the domestication process occurred closer to 15,000 or 30,000 years ago,
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major achievement in the world of canine science, and a landmark in the analysis of ancient DNA to show evolution, migrations and descent,
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jaws and occasionally nearly complete skulls from old and recent dogs, wolves and canids that could fall into either category.
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claims are controversial and is willing, like the rest of the world of canine science, to risk damage to the fossils themselves to get more information on not just the mitochondrial DNA but also the nuclear DNA.
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geneticists try to establish is how different the DNA of one animal is from another. Adding ancient DNA gives many more points of reference over a long time span.
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will be able to identify changes in the skulls or jaws of those wolves that show shifts to more doglike shapes, helping to narrow the origins of domestication
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the project will publish a flagship paper from all of the participants describing their general findings
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growing increasingly confident that they will find what they want, and come close to settling the thorny question of when and where the tearing power of a wolf jaw first gave way to the persuasive force of a nudge from a dog’s cold nose.