rogers
Regular Member
- Messages
- 46
- Reaction score
- 0
- Points
- 0
- Ethnic group
- Croatian
- Y-DNA haplogroup
- I2a2b
- mtDNA haplogroup
- U3
Yes, but how do you see it for people in the Friends section ? Or do you mean that the default Icelander is your best match among the 200+ individuals available for comparison as "public friends" ?
What is strange is that you are closer to this/these Icelander(s) than most Scandinavians would be. Two unrelated individuals from a same country would get about 19 or 20% of similarity at 1MB, not 21.7%. How can you be closer to Icelanders than other Scandinavians or perhaps even some Icelanders themselves ?
Even weirder is that you should have a high similarity with a Finn too. Finns are very different genetically from Scandinavians due to their partial Siberian ancestry and very limited Indo-European admixture (R1a and R1b). All my close matches are Scandinavians or Dutch, but none are Finns. I am closer to Italians and Spaniards than to Finns.
AFAIK the global similarity compares you to all reference populations at the 1Kb level. This does not include any friends or public friends. So the my No. 1 ranking with Iceland would be a comparison with the whole reference population.
My Finnish match is actually a known predicted cousin from 23andme. I have looked into this and spoken to her at length via email. We have concluded that it is a distant relationship 1630's possibly during the "Thirty Years War" in Europe where Finnish troops were deployed in battle with mainland European Catholics.
I really don't know why I match Scandinavians closer than they match themselves. I have posted my results in at number of forums including DNA forums and no one seems to have a clue except for the standard remark
"are you sure you are pure Croatian?" I have very high Runs of Homozygosity (ROHs) 68.616% which is higher then most Finns. This tells you that you may be from a bottle-necked population. Coastal Croatia is very mountainous and protected. Perhaps there are pockets where ancient peoples were bottle-necked and interbred extensively. These original people could have been similar genetically to Scandinavians? Or the only other way to explain my high match with Icelanders would be to theorize that there were "recent" (500-1000 years) visits by Viking traders and that they interbred with the locals?
You need to interpret the results carefully as well. If you look at the chromosome map some of the bands are in ancient regions that are common to a lot of Europeans. However even when all of this is subtracted I still end up matching Icelanders better than any other population.