In order to disclose how dogs have become animal and human beings, scientists have confirmed some genes that can make the dog calm.
Previously, some scientists felt that many types of wolves have changed into the current dog after human beings, but they do not know the reason for the evolution of dog behavior. Heritage Aborigines Mr. Bridgett von Holdt from Princeton University and Mr. Monique Udell from the University of Oregon has investigated dog genes and discovered the source of diversity between dogs and wolves.
Scientists have experimented with 18 dogs and 10 dogs. The task of dogs and wolves is to search hidden sausage in one of the boxes. Wolves conquered the dogs, even when humans were near, wolves could be satisfied with their work, but dogs can not, they spend much longer looking at humans rather than seeking sausage.
Scientists have examined genes of dogs and wolves, and discover that GTF2I genes and GTF2IRD1 of dogs have changed, which make them more eager for humans.
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