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From bones to sediments: ancient human DNA from open-air archaeological sites

Sawafuji, R.; Sawaura, R.; Yokoo, M.; Kumaki, T.; Thomasen, N. A.; Tsutaya, T.; Pedersen, M. W.

2025-03-19 molecular biology
10.1101/2025.03.19.643861 bioRxiv
Show abstract

Ancient human bones degrade and sometimes disappear, especially in regions with acidic soils, making it difficult to obtain genetic information from past populations. To explore alternative sources, we analyzed ancient DNA from sediment samples collected from a burial site and a settlement site in Japan, both dating to around 1000 years ago. We found that ancient human mitochondrial DNA was obtained from sediments surrounding bones, particularly close to rib bones, while human DNA was rarely detected in the settlement site sediments. Furthermore, the mitochondrial haplogroups identified in the sediments were identical to those from human bones, confirming the reliability of this approach. Our findings suggest that genetic information about past human populations can be directly obtained from archaeological sediments in open-air sites. This method also provides a non-destructive alternative to bones and teeth, expanding possibilities for ancient DNA research in regions where skeletal remains are poorly preserved.

Published in Journal of Archaeological Science · not in our set (fewer than 10 published preprints to learn from) · training set

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