Figure 2

Distribution of transposable elements along chromosome arms. For each chromosome arm, the centromeres are indicated by circles. Each colored tick marks the start coordinate of an element belonging to one of the four classes of element (see key). Note the large number of LTR elements (blue) relative to the other classes on the major chromosome arms, and the higher number of LINE-like (green) and TIR (red) elements relative to the number of LTR elements seen for chromosome 4. While there is a relatively even distribution of transposable elements throughout the majority of each arm, there is a significant increase in the density of all classes of element in the proximal euchromatin (see also Table 1).