Global25 ancestry tools
These tools place you in a coordinate space built from thousands of modern and ancient reference populations, so you can see who you are closest to — and how a Roma signature differs from the surrounding populations.
Fits your coordinates as a mixture of reference populations and reports the closest single populations and the best combinations of two, four, eight and sixteen.
When to use it: To see which modern populations you resemble, and how a two-way mix (for example South Asian + European) models your ancestry.
Reading the result:
- The 1-population fit is the single closest population; higher-way fits mix several to reduce the distance.
- Distances are relative — lower is closer, but small differences are not meaningful.
- Oracle output is descriptive, not a formal admixture estimate. Use the Admixture/Ethnicity page for component percentages.
Paints a map of the world by how genetically similar you are to the sampled populations, with a heatmap colour scale.
When to use it: For a quick visual of where your ancestry sits geographically.
Plots you and the reference populations on a principal-components scatter plot.
When to use it: To see clusters and where you fall between them — useful for spotting a Roma position between South Asian and European clusters.
Summarises your nearest modern populations and the direction of your ancestry on a simple compass view.
When to use it: When you want a plain-language read on your closest populations.
Compares you against ancient DNA samples and maps the closest matches.
When to use it: For context on deep ancestry and historical migrations.
- Ancient samples are sparse and often low-coverage; treat close matches as suggestive rather than definitive.
A shareable one-page summary of your closest populations and regional affinity.
When to use it: When you want a simple overview or something to show family.
Draws a tree of reference populations (and you) based on genetic distance, so you can see how populations cluster together.
When to use it: To understand how the reference populations relate to one another around your position.
Shows your Eurogenes K36 component vector against reference country vectors as a similarity heatmap.
When to use it: When you want a component-level (rather than coordinate-level) comparison with specific countries.
The Second Parent Simulator estimates the coordinates a missing parent would have, given a child and one known parent. It lists your own tree-linked parent–child kit pairs automatically (e.g. you + your father, to estimate your mother); pasting two coordinate lines still works. When both parents have kits it runs both directions and shows the two estimates side by side (they are different points — if both parents are from the same broad region their nearest-population lists will overlap, but the coordinates and distances differ). The Grandparents Simulator goes a generation further.
When to use it: When one parent (or grandparent) is untested and you want to explore what their ancestry might have looked like.
- These are mathematical estimates, not reconstructions from DNA — use them for exploration only.
The Average Coordinates tool averages several coordinate sets (for example all members of one family line); Compare Coordinates measures the distance between any two sets.
When to use it: To build a family-line average or to compare your coordinates with a reference or another kit.
Where the Romani match lives
The Romani route and community match are on the Admixture / Ethnicity page, with the full write-up on the Romany report. The report leads with the site's own RomanyN model and the shared-DNA (IBD) community evidence; the route breakdown and the per-community Global25 affinity table (Moriopoulos 2026 references) are on the Romani tab. The route estimates how much of your ancestry is consistent with a South Asian source versus the host populations along the Roma migration path (Balkans, Iberia and so on).
Your Roma community. The report now leads with a community attribution built from the site's own kits: members who know their community (set it in kit settings → Roma community) become reference seeds, and the report checks whether your kit shares triangulated segments with them — real IBD evidence, not just similarity. A seed stands for its primary community only, and triangulation is mutual: a third kit counts only if your kit also shares an overlapping segment with it. Tiers: Confirmed (a genuine 3-kit triangulation on a 10+ cM segment, plus a second independent 10+ cM seed, 20+ cM in total), Probable (two or more independent seeds with a 10+ cM segment each, or a genuine 3-kit triangulation on a 10+ cM segment, 20+ cM), Possible (a single 10+ cM segment) and Distant (weak) (independent seed families triangulating on 5–10 cM segments). Segments under 7 cM are listed separately as weak links below confidence — they never change the tier. Matches that are only family (you are related to one seed) are excluded, so being related to a Roma person does not by itself assign you their community. If the kits you match have not declared a primary community yet, or declare different communities, the card says so and the name appears once the participating kits agree. When there is no IBD evidence the report falls back to the Global25 similarity below. The more members declare a community, the better this gets — every declaration now trains RomanyN anonymously (the sharing box additionally makes the kit an IBD seed for other members). That is the site's own equivalent of AncestryDNA's Genetic Communities. County-level breakdowns need a reference panel and tester network on AncestryDNA's scale, so the report instead shows a documentary geography summary of your ancestors' birth places from the tree. A schematic migration-route map draws the historical Roma path (north-west India → Persia/Central Asia → Anatolia → Balkans → Europe), with each stage weighted by your modelled ancestry and the destination set from your closest / declared community — like AncestryDNA's migrations, the path is curated from the literature and personalised by your own results.
Reading the result. The report shows a Roma-like signal badge — strong, moderate, weak or below detection floor — based on the South Asian founder component, the weight on Roma references and how close the nearest Roma reference is compared with your nearest population. This is a Roma-ancestry site, so nearly everyone here has Roma ancestry, usually several generations back: the badge measures how much of that signal this array data can still resolve, not whether you have Roma ancestry. A Roma ancestor four or more generations back is often below the floor, and documented Roma descendants can read “below detection floor”. The community bar is Roma affinity (100% = as close as your nearest population) and is only shown when a signal is detected; the nearest Roma community is still shown as a research hint. If you have real Global25 coordinates, paste them on the report for a much sharper answer.
Attribution: Eurogenes Global25 and the calculators are by Davidski; the coordinate regression method follows Nganasankhan / Allelocator; mtDNA uses PhyloTree Build 17 (van Oven). Simulated G25 is clearly labelled as not real G25.