Diversity and size of haplotype blocks. a) The number of unique haplotypes per haplotype block and size of haplotype blocks along chromosome 4 in physical distance. b) Distribution of unique haplotypes per haplotype block across the genome. c) Distribution of haplotype block size in physical distance, represented as log10(bp). The vertical solid line represents the average size of 303.7 kb. d) Distribution of haplotype block size in genetic distance, represented as cM. The vertical solid line represents the average size of 0.2 cM.