EXCHANGE: Investigators explore how American dogs got


You may have a French user at your phoodle, but Siberia has a big part in getting a & # 39; introducing dogs to America.

That is part of the research carried out at the University of Illinois and the Illinois State Arcological Survey, based on a dog remnants, which includes two cuts on the backbone buried in the Illinois site just over the Mississippi River from St. Louis.

The funeral, funny funeral and about 50 fossil dogs help with the story, News-Gazette reports.

This genetic code tells us not only about dogs, but which could be about people who crossed the one that once crossed between Siberia and Alaska, said Ripan Malhi, a high- professor of geography and at Comprehensive Biology School.

The Illinois State Archaeological Survey has found several sites with dogs in them.

Without trying to destroy valuable scientific and cultural images, Malhi team samples from a tough dog that could be nearly 10,000 years old, maybe the most older in America.

"The amount that was deducted about the amount of installments (dentistry)," he said.

Malhi worked closely with Kelsey Witt Dillon, who directed the work of the DNA mitochondrial genome, following the mother's mother line, as a graduate student here. (She is now a post-graduate researcher at the University of California-Merced).

In a clean room – not finding trucks – the researchers gave out the DNA. It was then followed in another laboratory to create a "genomic library".

"The DNA gives millions of DNA pages to us," said Malhi, some of which have long been polluted with midwives or even human disturbance.

These first dogs came from the Siberian Americans, Malhi said, and most of them disappeared after European communication, a huge version of the population's decline in American Aboriginal after communication.

During the Ice Age (which lasted to around 14,500 years ago), sea levels were more than a century; Low and the area was between the southern Siberia and Alaska eastward, rather than the Bering Strait we know today. The area is called "Beringia", and people (and dogs) can cross the ground bridge due to this low sea level, Witt Dillon added.

Scientists argue how dogs just fell from generations to generation: & # 39; We may have killed ancestors to prevent antibodies with the dogs they were fed to hunting and herdsmen, or that they could be eaten during famine.

Disease is usually the cause that often comes from the same as Native Americans.

In the "Science," journalists researchers found that they did not; first dog in American and including North American weddings.

Apparently, they wrote, the dogs continued to the companion of a landfill who once joined North Asia through Siberia into the Americas.

At an archaeological site near Cahokia, named by Janey B. Goode, found other researchers with dog marks on their shoulders.

Malhi said that the signals could mean that dogs are only the best friends but our co-workers, Help you to drag cards of supplies or so a type of. Other work is similar to the way they used with sleds in the North West.

Malhi's knowledge finds genetic history, so he has titles as "Distribution of Y chromosomes among North American people: an analysis of Athapaskan's population."

He has been working closely with the people of the First Nations in British Columbia and Alaska, which includes a ' Exploring valuable food supplies, salmon.

Nuclear DNA and mitochondrial DNA tell stories in different ways.

Nuclear DNA is the DNA type that most people may have; think – the 23 pairs of chromosomes are all nuclear DNAs, and half of them will get from your mother and half of them from your dad, "explained Witt Dillon.

"Your DNA is getting out of your mother," she said, "and is found in many copies each cell than your nuclear DNA, so it's easier to get -where in old DNA examples, which are usually removed and separated. "

There are questions when and where their family's dogs were.

"The likelihood of dogs to be used between 15,000 and 21,000 years ago, anywhere in Europe or Asia," said Witt Dillon. "Europe, the Middle East, the South East Asia and Central Asia have been suggested as places where dogs started, but we still have no clear response."

Dogs may have appeared in several "birth" places.

On the way, that pocking that ends every dog; walk? It's a pian to you, but it's really valuable for science as fossil paths.

Karthik Yarlagadda, anthropological student, who graduates from the UHI is a Watching the microbiomas in the copper band, working with Malhi.

In modern knowledge, he knows that a large number of microbes are tested experiments that show a number of factors, and including the genetics, diet and environment of the hostel.

"Given that the communications that represent an ancient fecal sample, there is still some of the DNA that comes from the microbes that lived in the dogs at that time. This is especially interesting because ancient microbiomas give us an understanding of the life of a person, "Yarlagadda said.


Source: The News-Gazette (Champaign),


Information from: The News-Gazette,

This is an international AP-Illinois story that The (Champaign) News-Gazette offers.

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