The Rh Negative Blog

Is there a Basque-Jewish-Rh Negative connection?

Yemenite Jews or Yemeni Jews or Teimanim (from Hebrew: יהודי תימן‬ Yehudey Teman; Arabic: اليهود اليمنيون‎) are those Jews who live, or once lived, in Yemen. The term may also refer to the descendants of the Yemenite Jewish community. Between June 1949 and September 1950, the overwhelming majority of Yemen's Jewish population was transported to Israel in Operation Magic Carpet.

The answer is “yes”. And the more I am looking at genetic history, the more obvious it becomes.
As previously discovered:
Haplogroups J1c1 and J2a were 15% around 5,000 years ago amongst the Basques.

It comes to no surprise, that on the female side of Ashkenazi Jews, 1.7 Million people (20% of the Ashkenazi population) descend from one single branch.
(Which of course is unique, but no surprise considering being Jewish is being passed through the mother).
And just as the further back in time we go in the Basque region haplogroup J becoming more and more frequent, so does the Hebrew K on the female side:

(Source: 23andme)

Other studies reveal Bedouin groups being closely related to the Cohanim Jews. And the Bedouins are high in rh negative frequencies as well.

For more details continue here:
Are Rhesus Negative People Jewish?