Fig. 1From: Further host-genomic characterization of total antibody response to PRRSV vaccination and its relationship with reproductive performance in commercial sows: genome-wide haplotype and zygosity analysesDiagram of how haplotype variants were defined based on phased SNP genotypes using two approaches. In this diagram we have three individuals with five SNPs, for which haplotype 1 is formed by SNPs 1 and 2, and haplotype 2 is formed by SNPs 3, 4, and 5. Approach 1: each haplotype was considered as a variable with the number of copies of each haplotype (i.e., 0, 1, or 2) for each individual as levels. Approach 2: all possible haplotype blocks were considered as a variable with diplotypes as levels. In this approach, rare haplotypes (frequency ≤ 5%) were grouped into a single classBack to article page