How the comparisons work
- Genetic distance
- The report compares ADMIXTURE profiles within a selected timeframe. Smaller distances indicate closer fits within that reference panel.
- Mixture models
- The multi-reference model estimates weights for several profiles. The two-reference models compare equal weights and fitted weights.
- Genetic space
- Principal component analysis shows two dimensions of variation in the reference profiles, with the report profile projected on the same axes.
Frequently asked questions
Why do results change by timeframe?
Each timeframe uses the eligible ancient samples with documented dates in that window. Changing the reference panel can change the closest fit.
What do mixture percentages mean?
They are the weights used to fit the profile as a combination of the selected references. Genetic similarity alone cannot establish descent or cultural identity.
What does the map show?
The map shows recorded archaeological locations of reference samples. Coverage reflects where suitable samples are available.
What do lineage comparisons show?
A haplogroup comparison concerns a maternal or paternal lineage branch. It provides a different kind of context from the overall profile comparison.