Hello again, Adam, happy new year,
I thought it was good to clarify since I read many subscribers here to expect they have such possibility that they belong to a Rabbinical family (or at the very least that they have Jewish ancestry) if they test M-269 at a relatively low level of Y-37.
Just to be extra clear this mutation originated 4,000 to 10,000 years ago and is carried by at least 110million men.
Under these circumstances it will be common to many different ethnic groups.
In my family we have oral history of being Jewish and “ Spanish”.
I tested earlier on this wide-ranging haplogroup, but then ordered a Y-700.
First of all the number of my Y matches was really small and it stayed more or less the same testing in depth. As it is my Haplogroup is R-BY72268 which few matches show a slight predominance of Armenian origin.
According to some experts my Y chromosome doesn’t show many possibility of being of Jewish descent but the thing can be explained in many ways.
Adoption, Illegitimate Birth where the father was not the father that gave the surname or that the family married into some Jewish family and by way of mother the offspring were Jewish although genetically the father was not. Conversion... .
So there are many ways one can be Jewish, even according to de Halacha, but not test within a recognizable “ Jewish” haplogroup.
Curiously by way of mother I have quite a few MtDNA matches in several Jewish projects (but not others) such as the Mountain Jews and Mizrahi.
What I mean to say is that, the way I understand this, if one belongs to a Rabbinical family by a written genealogy and then someone tests a match of THAT particular person then it may be assumed that one is related to a Rabbinical blood line.
Shalom ( and although it applies to Rosh Ha Shanna the religious new year , Shanà Tovà, Goood New Year!)
Andrea