Researchers investigated how dogs came to America



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URBANA (AP) – Your puppy may be a French Genealogy, but Siberia played an important role in bringing dogs to America.

It is part of the Illinois University and Illinois State Archaeological Survey, based on the remaining remains of the dog, including two dogs that were buried in Illinois, across St. Louis Mississippi River.


The loving, ceremonial burial and about 50 fossilized dogs tell the tale, the News-Gazette reports.

This genetic code tells us not only about dogs but potentially the people who crossed the bridge between the bridge between Silla and Alaska, says Ripan Malhi, professor of anthropology, and the School of Integration Biology.

Illinois State Archaeological Survey had found several sites with dogs.


Since it did not want to destroy a valuable scientific and cultural monument, the Malh team took samples of domesticated dogs that would be almost 10,000 years old, probably in the oldest America.

"The removed amount is about the size of the (dental) cavity," he said.

Malhi worked in close co-operation with Kelsey Witt Dillon, who led the DNA genome work of mitochondria along the mother's line of dogs. (She is now a Merced Postdoctoral Researcher at the University of California).

In a clean room – no residual pollutants – researchers dropped DNA. It was then sequenced in another laboratory to create a "genomic library".

"DNA gives us millions of DNA bits," Malhi said, some of them have long been infected with microbes or even human malfunctions.

These first American dogs came from Siberia, Malhi said and largely disappeared after European contact, the extreme demographic version deteriorates with contacts with the original Americans.

During the ice age (about 14,500 years ago), the sea level was lower, and the region between Western Siberia and East Alaska was the whole country and nowadays it is not known for the Bering Strait. The area is known as "Beringia", and people (and dogs) were able to cross the countryside due to the lower sea level, Witt Dillon added.

Scientists discuss how closely the indigenous peoples usually dropped from the gene pool: Our predecessors were killing them to prevent breeding of dogs with the dogs they had already hunted or cattle or could have been eaten in famine.


Illness is the reason most often because the same thing happened to Indigenous Americans.

In Science, scientists argued that the first dogs in America are not tamed in North American wolves.

Probably they write, the dogs followed the comrade of people over the bridge that united North Asia through Siberia to America.

In the nearby archaeological site of Cahokia near Kenhi B. Goode, other researchers found dogs with signs of their shoulders.

Malhi said the signs could mean that the dogs were not just our best friends but also our colleagues who helped pull goods or other work that resembles their continued use in Northwestern dogs.

Malh's specialty is to trace genetic history, so his articles are titles such as "The distribution of Y chromosomes among the original North Americans: a study of Athapascas population history".

He has worked closely with peoples of the first nation with the British Columbia and Alaska, including an invaluable grocery store, salmon exploration.

Core DNA and mitochondrial DNA tell stories in different ways.

Core DNA "is the DNA type that most people probably think – 23 pairs of chromosomes are all core DNA, and you spend half of them on your mother and half of them your dad," Witt Dillon explained.

"Mitochondrial DNA has been inherited from your mother," he said, "and is found for many copies of cells as core DNA, so it's easier to find DNA samples from ancient times that tend to disintegrate and disintegrate."

There are questions about when and where the dogs were discharged.

"Dogs were probably domesticated 15,000-21,000 years ago, somewhere in Europe or Asia," Witt Dillon said. "Europe, the Middle East, Southeast Asia and Central Asia have suggested places where dogs come from, but we do not yet have a clear answer."

Possible dogs were born in many "birthplaces".

By the way, the dog that stops every dog ​​walking? Pain to you, but valuable science to fossilized copolytes.

Karthik Yarlagadda, an UI student of anthropology, studies microbombs in coprolites in collaboration with Malh.

In modern studies, he knows that the tested samples contain a large number of microbes that reflect many factors, including host genetics, diet, and environment.

"Because copolytes represent an ancient feces sample, they are likely to still contain some of the remaining DNA from the microbes that are in the dogs at that time. This is especially interesting because ancient microbes give us more information about the individual's life history," Yarlagadda said.


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