“Dogs present a good model for understanding what portion of the variation in their behavior is attributable to differences in genetics, and how much to their environment and experiences,” said Noah Snyder-Mackler, an assistant professor of psychology at the University of Washington and a co-author of the study. 8 окт. 2019 г.
Why does variation in dogs exist?
These differences between humans and dogs in the genetic complexity and the diversity of their traits are due to the distinct impact of artificial selection on dogs. Human genetic variation has been shaped over many generations by relatively weak natural selection on most traits, including height.
Why do dogs have so much genetic variation?
However, the nucleotides that make dogs look different were only found in a few areas of the DNA. These reflect the areas that have changed in the centuries since people started breeding dogs for different traits, creating many different breeds of dog in the process.
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