I made recently some f4-statistics in purpose to find out the Scandinavian admixture among East Europeans and Finns. My formula was
f4(test,West-Finland;Norwegian,Mbuti)
The result made me wondering how much the genetic structure of sample groups has effect on the result:
Lithuania West-Finland : Norway MBUTI 0.0027 2.905
Poland West-Finland : Norway MBUTI -0.0004 -0.583
Belarussia West-Finland : Norway MBUTI -0.0013 -1.620
RU_Smolensk West-Finland : Norway MBUTI -0.0002 -0.155
RU_west West-Finland : Norway MBUTI -0.0030 -3.779
RU_Tver West-Finland : Norway MBUTI -0.0031 -2.589
RU-Kostr West-Finland : Norway MBUTI -0.0054 -5.131
Romania West-Finland : Norway MBUTI -0.0105 -10.318
Bulgaria West-Finland : Norway MBUTI -0.0094 -10.234
Ukraine West-Finland : Norway MBUTI -0.0033 -4.404
Chuvash West-Finland : Norway MBUTI -0.0231 -24.172
Chuvashes are for a control purpose.
The result shows that the Lithuanians show more common admixture with Norwegians than the Finns do and they are the only group exceeding Western Finnish - Norwegian admixture.
Lithuanians share also more admixture with Chuvashes than Mordvas and
North-Russians do. They show more admixture than their neighbours, as
well in east as in west.
Mordva Lithuania : Chuvash MBUTI -0.0039 -4.050
RU_Vologda Lithuania : Chuvash MBUTI -0.0033 -3.406
Then I replaced the data base to the one published by Lazaridis et al. 2014, to confirm this observation. I also changed the outgroup to Chimp. There are some differences in sample groups, so also some differences are expected, but this result confirms what I got in the first test.
D stat Z
Lithuanian West-Finnish : Norwegian Chimp 0.0032 2.818
Belarusian West-Finnish : Norwegian Chimp -0.0026 -2.291
Bulgarian West-Finnish : Norwegian Chimp -0.0091 -7.949
Chuvash West-Finnish : Norwegian Chimp -0.0248 -20.419
No comments:
Post a Comment
English preferred, because readers are international.
No more Anonymous posts.