The accuracy of tellmeGen's ancestry analysis is based on a statistical comparison methodology between your genetic information and a reference database containing various genetic populations. Accuracy varies according to the homogeneity of the compared genetic population. Ancient populations, which are homogeneous and have had a stable genetic history, tend to have greater precision in the analysis. In contrast, more modern populations or those that have been influenced by recent political events and migrations are more heterogeneous, which can affect the accuracy of the ancestry assignment.
Despite these challenges, at tellmeGen we have carefully calibrated our methodology to guarantee the highest possible precision in each analysis.
Limitations of ancestry analysis:
- Unrepresented populations: Not all genetic populations are included in our DNA test, which may mean that your population is not represented. In those cases, the results will show the most genetically similar population. However, we are constantly working on updating our database and, whenever possible, we will include new populations.
- Standard deviation: As the methodology is based on a statistical comparison, residual percentages may appear in populations that are not actually part of your ancestry. These percentages should not be considered when interpreting results.
- Populations similar to each other: Although our methodology is precise, some very similar genetic populations can cause confusion in the calculation, especially in nearby regions with common genetic histories.
- Subregions or provinces: Currently, we are not able to differentiate subregions or provinces within a specific genetic population.
Despite these limitations, tellmeGen's ancestry analysis offers a reliable and detailed view of your genetic origins, and we are constantly working to improve the accuracy and coverage of our service.