Here's some genetics for ya':
http://3.bp.blogspot.com/-O31KYx5a1g...89372-BGA4.png
^As you clearly see, Ashkenazi Jews are outside of the European reference populations cluster. There are some other McDonald PCA plots where Jews are clustering with the pseudo-European Cypriots (who aren't in the European cluster), but I couldn't find those with Google search.
Source: Dr. Doug McDonald

