If we love purebred dogs, we should take good care of them. If we do not excessive pursue purebred, there will be less genetic problems in purebred dogs. Don’t make more purebred dogs cry; don’t make more purebred puppies suffer more genetic diseases, don’t make more homeless purebred dogs, don’t make more purebred dogs die in the shelters. They have already devoted too much for us, so now, it is time for us to do something for them.
Wang et al. (2013) suggested that domestication of dogs may have been a continuous process beginning with commensal living and hunting between humans and scavenging wolves that were excluded from hunting packs. A series of evolutionary events selecting for genes in dogs, as well as parallel selection of genes in humans and dogs, lead to the modern day fully domest... ... middle of paper ... ...on phenotypic traits were more intense for breeding programs compared to behaviour traits. Conclusion: Dog domestication origin appears to be highly complex and can still not be fully understood from a genetics perspective. Geographic origin of dog domestication as somewhere in southeastern Asia, and Chinese Native dogs most closely related to ancestral dogs was a consistent finding among researchers (Wang et al.
Over generations, natural selections would favor tameness and facilitate its spread through the scavenger wolf population. This then gave rise to dogs. Whether dogs arose ... ... middle of paper ... ... Their results suggest that a few SNPs of dominant effect (2 to 6 in general) may account for large amounts of morphological differences in dog breeds (70%). This suggest that the evolution of dogs from wolves may be the result of a few very significant point mutations that swept across the population because they produced the traits desirable to humans. In summary, while the video provides two possible and seemingly logical models for the evolution of dogs, it fails to account for the genetic basis of selection and other possible mechanisms of evolution.