INTROGRESS_v.1.22_input_file_(locus_data)

This is file 1 (locus data) of 4 input files needed for running the R package INTROGRESS v1.22 (Gompert & Berkle 2010). These files together allow maximum-likelihood estimate of the ancestry (multilocus hybrid score) of each individual, and genomic cline analysis, which compares admixture at a single locus to average admixture across the rest of the genome. We used the parametric approach, first estimating a multilocus hybrid index and then fitting clines in genotype frequencies at individual SNPs as a function of the neutral expectation derived from the genome-wide hybrid index.

本文件为运行R包INTROGRESS v1.22（Gompert与Berkle，2010）所需的4份输入文件中的第1份（基因座数据文件）。上述4份文件可共同用于对每个个体的祖先成分（多基因座杂交得分）进行最大似然估计，以及开展基因组渐变分析——该分析通过对比单个基因座的基因混合程度与全基因组其余位点的平均基因混合水平。本研究采用参数化方法：首先估算多基因座杂交指数，随后将单个单核苷酸多态性（Single Nucleotide Polymorphism，SNP）位点的基因型频率渐变拟合为基于全基因组杂交指数推导得到的中性预期值的函数。