Fig. 2.

Allele frequency difference (AFD) and haplotypes with long distances of extended haplotype homozygosity (EHH). a. The 40 years of selection had the largest numbers of large AFD between Groups I and III, followed by the first 20 years of selection between Groups I and II, and the second 20 years of selection between Groups II and III. Random AFD is the AFD between the selected cows at the University of Minnesota and the rest of the contemporary Holsteins in Group III. b. The 40 years of selection had the largest numbers of long-distance EHH between Groups I and III, followed by the first 20 years of selection between Groups I and II, and the second 20 years of selection between Groups II and III. The EHH distances were distances of haplotypes with minimal EHH of 0.6