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. 2010 Feb 12;6(2):e1000845. doi: 10.1371/journal.pgen.1000845

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Piras et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Distribution of FISH signals on horse (A), donkey (B), Grevy's (C), and Burchelli's (D) zebras chromosomes. At least 20 metaphases from each hybridization experiment were analyzed, examples of which are shown in Figure 1. Hybridization positive loci have been marked in different colors on banded karyotypes from each species: loci hybridizing with the 37cen probe only are labelled in green, 2PI positive loci are labelled in red and loci hybridizing with both 37cen and 2PI are labelled in yellow. Hybridization with genomic DNA probes, detecting total satellite DNA, is marked in blue. The differences in signal intensity among the sites, visible in Figure 1, are not reported here.