Greenish warbler sequences mapped on zebra finch genome assembly (pink annotations). The physical location of SNP markers is also indicated. Grey annotations refer to the set of 81,034 SNPs with data in at least 80% of individuals (N=95 birds). Yellow annotations refer to the subset of 2,334 SNPs with no missing data and minimum coverage = 3 reads. Blue annotations refer to the 1,827 SNP markers used during the chromosome-by-chromosome introgression analysis. These assemblies can be inspected in the free version of the Geneious genomic workbench, which can be downloaded from http://www.geneious.com/download
