How do evolution and natural selection differ?  How do we distinguish convergent evolution from modification by descent? How do we distinguish an adaptation from an exaptation?

39. To understand certain traits in animals, plants, and other microorganisms, behavior geneticists take advantage of the speed of in their experiments. a genetic drift b. natural selection c. adaptation d. artificial selection

51. Social Darwinism was a term generated by which was used to explain A) Darwin; the evolution of social mechanisms B) Darwin; natural selection C) Spencer; how the genes of certain individuals are superior to the genes of others D) Spencer; the evolution of social aggression E) Freud; why certain individuals feel socially inadequate

19. Evolutionary psychologists would explain that a trait is adaptive if a. there is no variability in that trait. b. it is more common within a species. c, it helped a specific individual within a population to survive. d. it helped a species survive and thrive in its natural history.