what is this?
Here, we present a comparison of your genetic code with that of people from all over the world. This comparison is based on several hundred thousand genetic variants and more than 1000 reference individuals from 50 different populations worldwide. The seven images above show the percentage of your genotypes that are shared with each of these populations, represented by a brown bar. The scale of genetic similarity shown is from 50% - 90%. The exact percentage for any one population can be viewed as tooltip information for its bar.
The number on the righthand side of the bar represents the rank of each population in terms of genetic similarity to you, with "1" indicating the greatest similarity. The first image shows a map of the world with the 50 worldwide populations grouped into six different regions and your average similarity to each of the six regions. The remaining images show more detailed maps of the six regions, presenting information about your genetic similarity to individual populations.
so where do I come from?
Tracing your exact geographical origin is a near impossible task and those claiming to be able to do so may often be providing more speculative results than factual. However, you will be able to use the results from the genetic similarity comparison to discover your ancestry in the broad sense of ethnicity.
We assess your genetic similarity to 50 different populations from all over the world. The greater your similarity to a particular population, the more likely you have ancestors that belonged to that group in the past. We plan to add more populations in the near future to allow for a more precise evaluation of your genetic relationship to world populations.
how does it work?
When we compare your genome with each of the reference individuals, we divide the genome into large segments and estimate the total fraction of the genome you share with them. We then calculate the average fraction you share with each of the 50 populations to which these individuals belong.
Note that because all humans are genetically very similar, you will always share a substantial fraction of your genome with all the different populations. However, in most cases, there will be subtle but sufficient differences in the average fraction shared with the 50 worldwide populations, such that we can reliably rank your genetic similarity and pick out the ones to which you have the strongest relationship.