The results of colinearity tests. For each panel, the 10 columns represent the 10 chromosomes. The standard chromosome is shown in light blue, with the centromere in royal blue; the vertical axis represents the centimorgan location on the standard chromosome. Significant colinearities between the standard and tester chromosome are shown on the tester chromosomes in either red (P < 0.005) or dark blue (P < 0.05). (Gray lines) Cross-hybridizing markers that do not comprise significant colinear regions.