How does the ancestry tracing work?
Please note that the ancestry tracing is only included in the Complete scan. The deCODEme ancestry or ethnicity tracing is valid for both the maternal and the paternal side. These are reported on separately in our report through the Y-chromosome markers (paternal lineage) and mitochondrial markers (maternal lineage). You will be able to use the results to tell yourself about your ancestry in the broad sense of ethnicity, but not specifically to trace your exact geographical origin. In fact this is very difficult to do and those claiming to be able to do so may quite frequently be providing more speculative results than factual. Where other services are generally only using sex specific transmission factors (mitochondrial and Y chromosome markers) our results take the whole genome into account. We compare your genetic similarity with over 50 ethnicity groups and we also analyze your ancestry down to individual chromosomal regions. We plan in the future to provide more specific ancestry/
