Fugu/Human 20q comparative gene maps. The positions of the human 20q orthologs of genes identified on the two Fugucontigs are shown on an ideogram of human chromosome 20. Mapping locations for the human genes span the whole of human 20q. Genes are named according to the nomenclature for the orthologous human gene. If a gene is duplicated in Fugu, the corresponding Fugugene name is shown in italics. The positions of the Fuguand human orthologs are linked by black lines. Genes that have been identified as being present in two copies in Fugu are linked to the mapping position of the corresponding human gene by dashed lines. Although Fugu contig 1 has been inverted in this diagram to reduce the number of crossover events, the number of changes in gene orders between the Fugu contigs and human 20q remains high. This indicates that gene orders in the two lineages have been disrupted by a number of localized rearrangements.
