Uploaded by UCtelevision on Jan 31, 2008
In this Hitchcock Lecture from UC Berkeley, evolutionary geneticist Richard Lewontin reviews a number of studies on the genetic differentiation between individuals within local populations, of local populations within classic geographical races and between races. He shows that almost all human genetic variation is contained between individuals within any local population and that the consequences of repeated migrations, invasions, and mixture between groups destroys any clear racial boundaries.
