主题：【原创】中日欧非印人类全基因组数据的聚类图 -- 瓦斯

If you dig out more information from the loading plot, the other one I mentioned, it is possible to give you some hints. Well, it may be a big task to do so if knowledge about that part on human being.

I myself used the statistic method to analyze some food samples, very different issue from yours. So I can not say more than I could.

Nice to know that the method is getting widely applied. The smart guy who developed it is a scandinavian.