Figure 6
![Figure 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2164-9-517/MediaObjects/12864_2008_Article_1710_Fig6_HTML.jpg)
Occurrence ratios in comparative genomics. Maize, sorghum and rice whole genome shotgun reads were randomly selected to generate 0.45 × coverage with respect to each genome's size. The total number of 20-mers in each logarithmic frequency class (A) are contrasted to the number of different 20-mers in each frequency class (B). Maize is the most repetitive of the three grasses analyzed here, but a corresponding increase in genome complexity is not observed.