XVII CULTURAL EVOLUTION
So far, we have been concerned only with biological evolution.However, organisms, to be more precise, animals also exhibit a number of adaptive traits, especially patterns of behavior that did not arise through biological evolution, but rather through cultural evolution.Cultural evolution differs from biological evolution in a great many respects and thus also the traits that emerge during it frequently have a character that substantially differs from the traits and patterns of behavior emerging during biological evolution.The fraction of the traits that emerged and became fixed in animals through cultural evolution is not very large (this is probably not true for humans).Nonetheless, a separate chapter is usually devoted to this subject in textbooks.Comparison of the laws governing cultural and biological evolution better emphasizes important characteristics of biological evolution.