🇯🇵 Japan Jomon Early genetics

Settled life before widespread rice agriculture

The northern Japanese sites recognised by UNESCO document hunter-fisher-gatherer communities with lasting settlements, burial places and ritual features. Forest and aquatic resources supported these ways of life over long periods. Sedentary settlement therefore did not depend everywhere on the arrival of rice agriculture.

Those heritage sites provide archaeological context for Jomon lifeways, but they are not a list of the sites contributing to this genetic reference. The label Early Jomon supplies a chronological category rather than a complete geographical inventory.

[1]

Coastal settlement at Kitakogane

Kitakogane in southwestern Hokkaido gives a concrete archaeological example of the developing settled lifeways associated with Early Jomon. Beside Uchiura Bay, its shell mounds contain shellfish, fish and marine-mammal remains, while broadleaved woodland lay inland. Houses, graves and food remains show how coastal resources supported a residential community.

The site also records responses to changing shorelines. Near a spring, excavators found broken grinding stones and milling basins interpreted as deliberate ritual disposal. Food gathering, settlement and ceremonial activity were intertwined. This is regional context for the period, not a claim that the eight individuals in this reference came from Kitakogane.

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Early Jomon in a genomic time series

Cooke and colleagues’ 2021 study included Jomon individuals assigned to several phases, including Early Jomon. Comparisons across temporal groups found similar relationships to continental populations, consistent with considerable continuity within the sampled Jomon sequence.

That result does not mean every locality had the same history. Early Jomon averages can combine individuals from different places, and a difference between two reference averages does not on its own reveal whether migration, local drift or sampling produced it.

[2]

How to read the Early Jomon reference

This page’s n=8 label is a database sample count, not the effective population size inferred in demographic research. The two quantities answer different questions and should never be substituted for one another.

For a useful comparison, examine both other Jomon phases and later Japanese references. The former help place this profile within the archaeological sequence; the latter show relationships after subsequent population movements. Neither comparison turns a distance score into a percentage of Jomon ancestry, and neither establishes which languages were spoken by Early Jomon communities.

[2]

What is Japan Jomon Early DNA closest to?

In the World Genetics modern G25 comparison, the closest non-self match for Japan Jomon Early is Japanese-Brazilian. Other nearby references include Agta, Aeta, Ryukyuan, and Japanese. This gives the Japan Jomon Early profile its nearest modern genetic context inside the current reference database.

What does Japan Jomon Early ancestry look like?

The ancestral breakdown below loads the best-fitting World Genetics calculator for the Japan Jomon Early average. It should be read as a model of deep ancestry components, while the closest-match table is the better guide to which modern populations are most similar in G25 space.

Where is Japan Jomon Early DNA closest on the map?

The heatmap gives the Japan Jomon Early profile a geographic shape. Warmer areas mark regions where available modern reference populations sit closer to the Japan Jomon Early average, while cooler areas represent more distant matches.

Sources and further reading

1. UNESCO World Heritage Centre, Jomon Prehistoric Sites in Northern Japan
2. Cooke et al. (2021), Ancient genomics reveals tripartite origins of Japanese populations
3. World Heritage Jomon Prehistoric Sites in Northern Japan, Kitakogane Site