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Ancient DNA reveals admixture history and endogamy in the prehistoric Aegean

PRJEB56216 Original Paper / DOI2023-01-16103 samples (study)

AI interpretationAI-generated

Ancient DNA from 21 prehistoric Aegean individuals reveals admixture and endogamy.

This study analyzes ancient DNA from 21 individuals buried at a single prehistoric Aegean site. The Y-chromosome results show a mix of haplogroups, with R-PF7558 appearing twice and several J lineages each once. Mitochondrial DNA is diverse, including U3a1, T2b8, R0a1a, U1a1a, H105, and H2. The abstract is not provided, but the title indicates the research uncovers both admixture history and endogamy. The site samples suggest a community with some genetic continuity and possible close-kin marriages.

Sample interpretation

The 21 ancient individuals were all recovered from site XAN051. Y-chromosome analysis resolved all 21 samples, with R-PF7558 being the most frequent (2 individuals). The remaining Y lineages are all J subtypes, each represented by one individual. Mitochondrial DNA was also obtained, showing six different haplogroups, each in one individual. This pattern suggests a small community with both paternal and maternal genetic diversity, but the presence of multiple J lineages and diverse mtDNA could reflect admixture or local variation.

For genealogy enthusiasts

For ancestry enthusiasts, this study highlights that prehistoric Aegean communities were not genetically isolated. The mix of Y and mtDNA lineages, plus evidence of endogamy, shows how ancient DNA can reveal complex social and mating patterns. It also provides a snapshot of genetic diversity in a single site, useful for tracing broader Aegean prehistory.

Abstract

The Neolithic and Bronze Ages were highly transformative periods for the genetic history of Europe but for the Aegean—a region fundamental to Europe’s prehistory—the biological dimensions of cultural transitions have been elucidated only to a limited extent so far. We have analysed newly generated genome-wide data from 102 ancient individuals from Crete, the Greek mainland and the Aegean Islands, spanning from the Neolithic to the Iron Ages. We found that the early farmers from Crete shared the same ancestry as other contemporaneous Neolithic Aegeans. In contrast, the end of the Neolithic period and the following Early Bronze Age were marked by ‘eastern’ gene flow, which was predominantly of Anatolian origin in Crete. Confirming previous findings for additional Central/Eastern European ancestry in the Greek mainland by the Middle Bronze Age, we additionally show that such genetic signatures appeared in Crete gradually from the seventeenth to twelfth centuries bc, a period when the influence of the mainland over the island intensified. Biological and cultural connectedness within the Aegean is also supported by the finding of consanguineous endogamy practiced at high frequencies, unprecedented in the global ancient DNA record. Our results highlight the potential of archaeogenomic approaches in the Aegean for unravelling the interplay of genetic admixture, marital and other cultural practices.

Samples & Data on TheYtree

39samples on site
39Y haplogroup resolved
1archaeological sites

Sample Map

Map tiles by TheYtree · dot size = number of samples

Paternal (Y-DNA) Haplogroups

HaplogroupSamples
J-P58 5
J-Z615 3
J-V2639 2
J-BY54316 2
R-PF7558 2
J-Y151557 2
J-ZS12519 1
J-PF5119 1
J-Z600 1
J-Y13128 1
J-ZS104 1
J-F312 1

Maternal (mtDNA) Haplogroups

Sample Highlights More samples →

SampleY-DNAmtDNACulture / Period
KUK002 R-PF7558 U1a1a
LAZ017 J-ZS104 T2b8
NST001 J-ZS12519 U3a1
NST004 I-BY160929 W3b
NST005 G-PF3378 H7
NST010 L-L595 H2
NST012 J-ZS50 H105
TIR001 J-F312 —
TIR010 J-V2639 —
XAN007 G-P287 —