Representation of the physically mapped gene space of chromosome 1AL.

<p><b>A.</b> The syntenically predicted gene order (left) is compared with all gene markers found on physically mapped contigs (centre). Each horizontal bar represents a single gene; syntenic genes are shaded in pale green, non-syntenic genes in dark green. Connections show syntenic genes found in unexpected locations on the physical map; grey connections and bars indicate putative gene duplications. Red connections and bars indicate translocations of individual genes to a different genetic location. Where two genes from different locations of the syntenic sequence were found on the same contig, and no other evidence was available to determine which location is correct, the genes are marked and connected in yellow. The genetic ruler indicates gene markers that have defined genetic distance from the centromere, while others were interpolated using the syntenic sequence. <b>B.</b> Using the gene sequence shown in <b>A,</b> cumulative number of gene markers was plotted against genetic distance from the centromere. <b>C.</b> Using the gene sequence shown in <b>A,</b> cumulative length of contigs harboring syntenic genes was plotted against genetic distance from the centromere.