Fig. 6

Gene density along Actinidia chinensis chromosomes. a Comparison of gene density of Chr6 (depicted by image of genes along chromosome) and physical distance measured in bp along the chromosome and genetic distance in centimorgans (cM), measured in a mapping population. b The relationship between gene density and regions of homology between sister chromosomes. When the gene plots were aligned to a subset of homeologous chromosome arrangements, translocation events appear to be linked to areas of lower gene density (cut point marked by small vertical arrows), RC represents gene alignment images that have been reversed to aid alignments. c) An expanded view of Chr19 which demonstrates two regions of low homology to other kiwifruit chromosomes, and low gene density, surrounding a region of high homology and higher gene density marked by arrows