Evolutionary history of dogs discovered by genetic analysis.

By analyzing the genomes of 161 dog breeds, scientists find out how and when certain dog breeds appeared.
Park and colleagues evaluated the genomes of 1,346 dogs across 161 breeds to assemble a large family tree, describing the evolutionary histories of dogs. The team’s analysis found that 161 dog breeds fell into 23 genetically determined groups, or cadastres.
By evaluating these areas, the researchers found that certain traits, such as the herb, were bred many times in history. They also found evidence that some dogs were used to develop specific traits – acne genes, for example, appeared in a number of small dog genomes. Signs of cross breeding after human migration, such as the German shepherd’s genes in hairless
Peruvian dogs (a New World dog), also appeared in the genomes of some dogs.

“They show that by using genetics, you can really tell what was going on after [the producers] were doing these races,” said Elinor Karlsson, a computer biologist at the University of Massachusetts Medical Center who was not involved In work. “The whole period between [mitigation and today] has been a black box.”
The new canine family tree can help veterinarians discover genetic risk factors for the disease.
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