Description
Haplogroup G2 — and especially its subclade G2a — is one of the defining genetic signatures of Neolithic farmers who spread agriculture from Anatolia into Europe beginning around 7000 BCE. Ancient DNA studies have confirmed that G2a was the dominant or co-dominant haplogroup at dozens of Neolithic sites across Europe, from the Iberian Peninsula to Hungary and Ukraine. This Neolithic farmer ancestry was substantially diluted by the later Bronze Age Yamnaya steppe migration (~3000 BCE), but G2a survived at highest frequencies in refugia such as Sardinia, the South Caucasus (Georgians ~45%, Ossetes ~60%), and isolated Alpine communities. The Tyrolean Iceman Ötzi (~3300 BCE) carried G2a2b, placing him squarely in the Neolithic farmer lineage.
Interesting Fact
Ancient DNA from dozens of Neolithic sites across Europe — spanning France, Germany, Hungary, Spain, and Sweden — shows that G2a was among the most common paternal lineages of early European farmers, yet today it is carried by only ~2% of Western Europeans, demonstrating how dramatically the Bronze Age steppe migration reshaped the European paternal gene pool.
Distribution by Ethnicity
| Ethnic distribution | Region | Frequency | Sample |
|---|---|---|---|
| Ossetes | North Caucasus | n=150 | |
| Georgians | South Caucasus | n=400 | |
| Armenians | South Caucasus | n=300 | |
| Sardinians | Southern Europe | n=200 | |
| Iranians | Near East | n=500 | |
| Europeans (average) | Europe | n=5000 |
Associated Clans & Tribes
Tribe
Neolithic Anatolian Farmers
Europe
G2a-carrying agriculturalists dominated the European paternal gene pool for thousands of years before the Bronze Age steppe expansion
Family
Ötzi the Iceman
Alpine Europe
The 5,300-year-old Tyrolean Iceman belongs to G2a2b; his closest living relatives are Sardinians
Tags
References
- Haak et al. (2015) — Massive migration from the steppe was a source for Indo-European languages in Europe. Nature 522, 207–211.
- Keller et al. (2012) — New insights into the Tyrolean Iceman's origin and phenotype as inferred by whole-genome sequencing. Nature Communications 3, 698.
- Lazaridis et al. (2014) — Ancient human genomes suggest three ancestral populations for present-day Europeans. Nature 513, 409–413.