With the extensive application of DNA studies in archaeology, and the clear importance and contribution of this field, but at the same time, along with the unfortunately all-too-common misunderstanding of the implications of such research, it is important, time and again, to remind those practicing, and interested, in archaeology, that cultural similarities do not always equal biological relatedness. In other words, groups with similar cultural attributes can, but also cannot, be biologically related (as seen in genetic profiling), and at the same time, groups with diffferent cultural attributes can, or cannot be biologically related.
Thus, simplistic equations between genetics, material culture and group identity should be avoided.
To illustrate this very nicely, see the just published study, by Wang et al., on a genetic study of two groups of “Avars” from late Antiquity and early medieval central Europe. These two groups, despite having similar material culture, retained dinstinctively separate genetic profiles, over a period of two centuries.
While this study deals with other regions and periods than those covered and discussed here, the methological and practical implications are just as relevant for cultures and groups of the Bronze and Iron Age Levant. One must repeat again and again: what DNA tells us is first and foremost about biological relatedness. Additional conclusions based in DNA studies (and in particular ancient DNA studies) are complex and should not be simplistically interpreted!
Here is the full title (and link) – check it out:
And here is the abstract:
After a long-distance migration, Avars with Eastern Asian ancestry arrived in Eastern Central Europe in 567 to 568 ce and encountered groups with very different European ancestry. We used ancient genome-wide data of 722 individuals and fine-grained interdisciplinary analysis of large seventh- to eighth-century ce neighbouring cemeteries south of Vienna (Austria) to address the centuries-long impact of this encounter. We found that even 200 years after immigration, the ancestry at one site (Leobersdorf) remained dominantly East Asian-like, whereas the other site (Mödling) shows local, European-like ancestry. These two nearby sites show little biological relatedness, despite sharing a distinctive late-Avar culture. We reconstructed six-generation pedigrees at both sites including up to 450 closely related individuals, allowing per-generation demographic profiling of the communities. Despite different ancestry, these pedigrees together with large networks of distant relatedness show absence of consanguinity, patrilineal pattern with female exogamy, multiple reproductive partnerships (for example, levirate) and direct correlation of biological connectivity with archaeological markers of social status. The generation-long genetic barrier was maintained by systematically choosing partners with similar ancestry from other sites in the Avar realm. Leobersdorf had more biological connections with the Avar heartlands than with Mödling, which is instead linked to another site from the Vienna Basin with European-like ancestry. Mobility between sites was mostly due to female exogamy pointing to different marriage networks as the main driver of the maintenance of the genetic barrier.











