View Full Version : Breakdown of Jordanian Yfull branches

06-18-2020, 01:49 AM
For those interested in Levantine Y branches:

I took a look at the 56 samples currently on the Ytree to see if there's a certain structure. Keep in mind that it's not a random sample so may not represent the population as a whole. Nevertheless, these high-resolution results warrant investigation.

Yfull assigns all results into 47 haplogroups. I found that those groups can be further broken down into 21 unique branches (see 'Subclade' column in the below table). 18 out of the 47 haplogroups (38%) are actually part of one branch, J1-FGC11>FGC1695, which is dated to the Iron Age (~1000 BCE). I think it's quite remarkable that such a significant portion of the Jordanian population descends from one, relatively "young" common ancestor.

At least one academic study may back up this finding. Karafet et al (2016) report that 93/170 Jordanians (54%) belong to haplogroup J-L147, which if I'm not mistaken is the equivalent of J-Z2331, upstream from FGC11 and below P58. Flores et al (2005) also reported that 40% of Jordanians belong to J1 (N=101), though interestingly they also sampled residents of the Dead Sea area and noticed their frequency is different (40% R1 and 30% E-M123 vs. only 9% J1).

Though its modern distribution makes it appear to be Arabian in origin, J-FGC1695 has been found throughout Jordan geographically, both in the north (Ajlūn and Al Mafraq) as well as the south (Ma‘ān).


Karafet et al (2016) "Coevolution of genes and languages and high levels of population structure among the highland populations of Daghestan"
Flores et al (2005) "Isolates in a corridor of migrations: a high-resolution analysis of Y-chromosome variation in Jordan"