Entry #1: Domestication

The problems with this argument that Darwin identified is he says that domestic species are not different when it comes to their genes. This could not be true because many of the domesticated species of today look nothing alike. There are now many different types of breed of dog. They may have all come from one specific type of dog but the genes have changed as more and more different species were bred. Darwin also says that some races have been modified by other different crosses. I believe that the domestication process may have started out with just one type of species of dog but grew as more and more different species were discovered.
On a genetic level, you could look at the different variation of the genes and the genetic make up of the animals. A mutation, which is a rare gene that is inherited could also cause the different breeds of dogs that we have today. Many of the crosses between the different types of dogs could somewhere in between contain a mutation. Another reason could be because of epistasis which is where a gene influences the expression of another genes phenotype.
Dawkins says that the "survival of the fittest" is an organism that will sacrifice itself when needed to save the species as a whole. He is implying that the species that are not being selfish will survive.
Ecology plays a role in the domestication of the dog because the dogs that were isolated from the wild dogs may have been easier to domesticate.