Complex sentence: Much of this argument depended on paternal Y chromosome DNA evidence Oppenheimer reviewed the Weale and Capelli studies and suggested that correlations of gene frequency mean nothing without a knowledge of the genetic prehistory of the regions in question.
Split into simpler sentences: Much of this argument depended on paternal Y chromosome DNA evidence. Stephen Oppenheimer reviewed the Weale and Capelli studies and suggested that correlations of gene frequency mean nothing without a knowledge of the genetic prehistory of the regions in question.