Domesticated: Evolution in a Man-Made World

With encyclopedic detail, Francis (Epigenetics) investigates the nature of domestication, focusing mostly on the biological rather than anthropological factors responsible for a wide array of human/animal partnerships. He ranges widely across species, including house pets, livestock, and pack animals, discussing the types of genetic changes that commonly occur during the process of domestication and the developmental implications such changes have. Francis describes how tameness, tolerance of human contact, and increased in-group sociality are frequent precursors to domestication and are often allied with the retention of juvenile traits in adults. Offering an effective primer on molecular genetics and the field of evolutionary development, he also demonstrates how conservative evolution can be, even while documenting some of the amazing changes species have undergone in relatively short periods of time due to strong selection imposed by humans. In his exploration of human evolution, he asks whether our species has experienced, via “self-domestication,” some of the same physical and cultural changes as have our domesticated companions; he concludes that the available data are not yet robust enough to form a firm conclusion about the self-domestication hypothesis, but suggests that our success as a species could be largely due to our enhanced sociality. Though the details can be overwhelming, Francis’s ability to weave in interesting asides keeps the text thought provoking. Illus. [em](May) [/em]