INTROGRESS_v.1.22_input_file_(parent_1_data)

This is file 2 (parent 1 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 & Berkle，2010）所需的4个输入文件中的第2份（亲本1数据集）。上述4份文件可联合实现对每个个体祖先起源（多位点杂交得分）的最大似然估计，以及基因组梯度分析——该分析将单个基因座的遗传混合水平与全基因组其余位点的平均混合水平进行比对。该分析采用参数化流程：首先估算多位点杂交指数，随后以全基因组杂交指数推导得到的中性预期值为函数基准，拟合单个单核苷酸多态性（Single Nucleotide Polymorphisms, SNPs）位点的基因型频率梯度模型。