Table 1 Summary statistics for the gray whales. Heterozygosity across the entire genome (θgenome), heterozygosity excluding ROHs (θnoROH), number of ROHs (NROH), mean ROH length (LROH), sum of ROH lengths (TROH), and inbreeding coefficient (FROH) in the gray whale autosome. All results are based on sites with depth of coverage ≥20×. A genome size of 2.4Gb was used for calculating FROH