The false science of racial genetics, developed to its fullest extent by certain people in a certain country in central Europe, was thought to be dead. This "science" was based on the assumptions that modern nations or peoples constitute distinct "racial" groups, and that it is possible to prove political points based on "scientific" racial characteristics. For example, the "negroid race" was thought to be inferior, the "Aryan race" was thought to be the true inheritors of Europe and world dominion. As for the Jews, better not ask.
Two articles about Columbia Professor Nadia Abu el-Haj merit our attention in this regard:
The above takes on the dubious contention that Jews don't come from the Middle East, a contention generally advanced by racists and often disproved. It began, of course, with the speculations of Arthur Koestler that Jews are descended from Khazars, since dispoved as well, but ubiquitous among articles by anti-Zionists and Holocaust deniers. The question nobody raises is "who cares?" Arabs did not originate in North Africa, but nonetheless claim sovereignty over large parts of it. The identification of peoplehood with "race" was an invention of the Nazis, since discredited.
And Nadia Abu el Haj and Junk DNA. It seems el Haj is hard at work on the genetics aspects of the Jewish problem. Her conclusions are junk science, of the type that was done in a certain European country around 1938.