Fig. 3
From: Genome changes due to artificial selection in U.S. Holstein cattle
The 64.86–65.05 Mb region of Chr01 had increased EHH continuously during the 40 years of selection. The Holstein cows subjected to 40 years of selection had the highest EHH values (first column). The frequency of the GGCGG haplotype was 0.05 in the unselected Holsteins (Group I), increased to 0.19 in Group II after 20 years of selection, and increased to 0.32 in Group III after 40 years of selection (second and third columns).