Brian Hare tells us the story of Dmitri Belyaev,a geneticist and clandestine Darwinian who lived in Stalinist Russia and studied the domestication of the silver fox. Through generations of selectively breeding a captive population, Belyaev noticed not only increased docility, or but also unexpected physical changes. Why did these gentler foxes necessarily glance different than their wild ancestors? Tecumseh Fitch has a hypothesis,something approximately trailblazing cells and embryonic development. And Richard Wrangham takes it a step further, suggesting us humans may gain domesticated ourselves.
Source: wnyc.org