Thursday, April 15, 2010
On page 125 Coyne talks about the breeding that humans have done of the domestic dog in relation to evolution by selection. The dogs all come from ancestors of other animals that were not forced to live in captivity and when they were evolved into the dogs that we know today. These include around 150 breeds of dogs that were created due to human action. "Breeders have virtually sculpted these dogs to their liking..." (126). Was this human influence on dog evolution harmful to the ancestors that they came from? Should the breeding of dogs for things like the shade and thickness of their coats be allowed even though it may cause health problems and interferes with natural selection? Discuss the effect that this evolution by selection has on the process of natural selection and give other examples of evolution by selection. How do wild dog breeds and domestic dog breeds differ and relate to each other? Contrast and compare artificial selection versus natural selection.