How Rover got his wrinkly skin

摘要

An analysis of several dozen dog breeds has yielded a genetic catalogue that can be used to search for information about complex canine traits and diseases. Matthew Webster of Uppsala University in Sweden and his colleagues looked for single-base changes in the DNA of 509 dogs representing 46 breeds. The dogs spanned a wide range of shapes, colours and sizes, from tiny chihuahuas to huge Newfoundlands.