I agree, Pied Piper, one human race. this article on the genetic lineage of european jews points out that in ancient Israel, the Jewish priesthood was handed from father to son. But at some time from 200 B.C. to A.D. 500, Jewish status came to be defined by maternal descent. Even though the founding mothers of most Jewish communities were not born Jewish, their descendants were.

New genetic data dispels the theory that european and other Jewish communities around the world were formed by families who were fleeing persecution or making invited settlements. A new study now shows that the women in nine Jewish communities from Georgia, the former Soviet republic, to Morocco have vastly different genetic histories from the men. In each community, the women carry very few genetic signatures on their mitochondrial DNA, a genetic element inherited only through the female line. The women's genetic signatures are not related to one another or to those of present-day Middle Eastern populations.

in other words the men married out. if you take the more recent theory that you have have a Jewish mother to be Jewish, then there goes all the Jewish communities outside the Middle East.