Evolutionary relationships in Phytophthora ramorum. (A) Neighbor-joining tree constructed from Euclidean distances between isolates using 485,327 biallelic SNPs, including SNPs from run of homozygosity (ROH) regions. Isolates displaying ROH are indicated with red squares, and those having chromosomal copy number variants (CCNV) are indicated with green squares. (B) Neighbor-joining tree constructed from Euclidean distances between isolates using 275,307 biallelic SNPs, excluding SNPs from regions with ROH.