west and south Eurasia profile trees

The data consists in genome-wide SNPs that were obtained from 5 different sources, keeping the SNPs common to all 5 sources. The combined dataset consisted in 3146 autosomal SNPs for 4025 individuals from 167 populations. It was analyzed using FRAPPE, with default settings, and for K ranging from 2 to 16. For each value of K, the resulting ancestry profiles were averaged within each population, and a chi-squared distance between the average ancestry profiles were used to compute a distance tree using FastME. These trees were computed using the populations of west and south Eurasia. The colour of a leaf is chosen according to the linguistic family of the corresponding population.

本数据集涵盖从5个不同来源获取的全基因组单核苷酸多态性（Single Nucleotide Polymorphism，SNP），仅保留5个来源共有的SNP位点。整合后的数据集包含167个群体的4025名个体的3146个常染色体SNP位点。本次分析采用FRAPPE软件，以默认参数运行，预设祖先组分数量K的取值范围为2至16。针对每个K值，先对各群体内得到的祖先组分图谱取平均值，随后基于群体间平均祖先组分图谱的卡方距离，通过FastME软件构建距离树。本次分析仅使用欧亚西部与欧亚南部的群体样本构建上述距离树。距离树的叶片颜色根据对应群体所属的语系进行设定。