Y chromosome test for rabbinic descent
Some of you with the Katz name ought to be interested in chromosome testing , either by the people in Oxford (led by Bryan Sykes, author of Seven Daughters of Eve) or in Houston (familytreedna.com).Many of the Cohens and Katzes seem to have Y chromosomes that apparently go back to the Middle East and theoretically to Aaron, the brother of Moses. or his clan. Others in the forum would probably be interested in reported results.There is also a DNA discussion group on JewishGen.