Thank you Azzurro. actually thats the sample that I based this statistics from, thanks for posting it.
Anyway the sample needs further investigation to determine the sub clades and mutations. But it is important because knowing the Saudi DNA frequencies is key in understanding surrounding populations and migrations, because Islamic invasions began from mostly Saudi Arabia.
This sample proves what I have been saying for a long time, which is that most people commit a big mistake when trying to determine Arabian DNA influence on a specific population, because they only look at J1 frequency, while J1 only constitutes 40%-65% in most samples. While the rest is mostly J2, E1b1b, and T.
The mistake that people make is assuming that Yaman is the purest place for Arabian DNA, this is historically wrong because Yemen and the rest of the Arabian peninsula were all equally Arabs. And more importantly, Islamic invasions and rule was mostly done by Arabs from modern day Saudi Arabia and south of levant and Mesopotamia, so the Yamani DNA is less relevant in trying to determine the trace of Arabic DNA in the places they conquered.
Another important factor to put in mind in determining the Arabian DNA is that the "Arabian" ethnicity did not necessarily begin and continuo with only one group of people, there was likely a lot of migrations from the north (levant and Mesopotamia) to the Arabian peninsula, these migrations were assimilated with the people of the Arabian peninsula and adopted their language and culture. So even if the porto-Arabians of the Arabian peninsula were mostly J1 people, that probably changed hundreds, and likely thousands of years before Islam. This was actually the view that Arabs before Islam were holding.
. I think the moderator has to approve the post. Approve it moderator 
