g The ultimate significance of the fact that artificial selection often leads to change in the tested population is that it a. shows that most animal species have a long way to go in reaching their full evolutionary potential. b. demonstrates that genetic differences are often responsible for phenotypic differences among the members of a population. c. demonstrates that the environment has relatively little effect on the development of most behavioral attributes. d. shows that populations often possess the potential for evolutionary change in the present, and so they could have been evolving in the past.