Figure 9

Segmental duplications of the microsatellite pair (ATTT)n__3810 bp__(TC)n within chromosome 2L (2L:21421283–21534584) of D. melanogaster . A ). The chromosome 2L region (2L:21421283–21534584) along with the gene positions and orientation of D. melanogaster are shown (FlyBase Genome Browser). The mSDs are indicated by grey horizontal lines below the genes. B ). Neighbor-joining phylogenetic tree of the twenty segmental duplications. The percentages of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches. The tree is drawn to scale (shown below the tree) that shows branch lengths in the same units as those of the evolutionary distances used to infer the phylogenetic tree. C). Structure of duplicated sequence. Each duplication is approximately 3.8 kb in length, contains (ATTT)n at one end and (TC)n at the other end and harbors four histone genes (His 1, His 2A, His 2B and Hist 4) localized in similar position and orientation.