Wait Hugh, you can't do that. You said being a Jew is biology. Their biology has changed.A very small minority believe that he,Rabbi Menachem Mendel Schneerson, has God-like powers, or is the "CREATOR"
Wait a bit, these Jews are NOT Jews they believe that their rabbi was God Almighty the Creator.
They are into IDOLATRY and so are NOT Jews.
As I've said before, the Lubivitchers are a fringe group. The rabbis from other movements denounce them.