In other words, they have the same gene, and the genetic similarity is over 99%. It's just that the living habits and eating habits of dogs have changed in the long-term domestication of human beings, and some characteristics of genes have also changed, which makes wolves and dogs different in signs and personalities.
There is a folk saying that the wolf is the uncle of the dog, which also proves that the wolf and the dog are related by blood. Humans first domesticated wolves 15,000 years ago, generally speaking, they evolved from East Asian wolves.
That is to say, the earliest East Asians domesticated wolves into dogs, and later, together with the earliest settlers in America, they crossed the Bering Strait, arrived in America through Asia and Europe, and then distributed all over the world.
Through the DNA analysis of dogs by scientists, it is found that although there are many dog breeds in the world, all dogs have similar gene sequences, and these genes are very similar to wolves. In other words, there is no reproductive isolation between wolves and dogs, and they can mate and reproduce.
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