Dot plot of the relationship between the two different assemblies of the guppy LG12.

The x axis shows the female assembly, and the male assembly positions are shown on the y axis. sequences and sequences in the platyfish, Xiphophorus maculatus, whose homologous chromosome is Xm8. Genetic mapping in male meiosis shows that in the guppy the PAR is at the right-hand end of LG12, indicating that the centromere if this telocentric chromosome is at the left. In the platyfish, the order of sequences is reversed, so that sequences corresponding to the guppy PAR are assigned low number on the y axis. (TIFF)