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. 2015 Sep 16;5:14106. doi: 10.1038/srep14106

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Copyright © 2015, Macmillan Publishers Limited

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(a) Landscape of chromosomal rearrangements. Column 1: Six regions categorized in donkey and horse chromosomes. They are: #1(orange): Centromere regions in the horse chromosome; #2(green): Centromere regions in the donkey chromosome (at least 6 centromeres are neocentromeres); #3(blue): Homologous regions in the horse chromosome related to region #2; #4(red): Homologous regions in the donkey chromosome related to region #1; #5(brown): Other regions in the horse chromosome; #6(purple): Other regions in the donkey chromosome. (EAS: Equus asinus; ECA:Equus caballus). The arrow indicates the direction of two corresponding centromere repositionings. The question mark (‘?’) indicates the direction of two corresponding centromere repositionings that are not classified. Column 2: Synteny analysis between region #4 and region #1. Column 3: Synteny analysis between region #2 and region #3. Column 4: Synteny analysis between region #6 and region #5. (b) Chromosomal rearrangements between donkey and Thoroughbred horse. Black vertical lines represent rearrangement regions in the Thoroughbred horse chromosomes. (c) Numbers of rearrangements events in seven pairs of chromosomes. (d) Distribution of satellite sequences and ribosomal RNA in region #1, #3 of ECA22 and region #2, #4 of EAS15. (e) Proportion of satellite sequences in regions #1–6. (f) Proportion of ribosomal RNA in regions #1–6.