The researchers around Paul Jones examined 13, 000 genotypes, the dog owners of a DNA database of the veterinary division of Mars had made available. The genotype comes from blood or saliva samples of the dogs. In total, 148 dog breeds could be compared. The researchers found genome sections that determine the physical appearance and behavior of the dogs.
For example, six gene segments distributed across five chromosomes regulate growth and size. Four sections determine how old a dog breed can become. In addition, the scientists found clues as to where in the genome certain behaviors of a hunting dog or a shepherd dog can be found in the genetic code. The researchers now want to further refine their technique to learn even more about the temperament, trainability and adaptability of a race to humans. With this information, future dog owners could find out which animal best suits their lifestyle, Jones explains.Paul Jones (Waltham Center for Pet Nutrition) et al .: Genetics, Vol. 179, p. 1033 ddp / science.de? Martin Schäfer advertisement