Figure 1.
Conserved segments. Comparative map between a region of human chromosome 11 and the corresponding conserved segments with rat chromosomes 1, 3 and 13. (A) Representation of 7 conserved segments along human chromosome 11 (right) colour coded according the corresponding rat chromosomes in the following order: 1, 1, 3, 13, 3, 1 and 1. The corresponding rat chromosome regions are represented opposite facing on the left. (B) Decomposition of these segments into chains of segments from a lower level of conservation. The segment circled in A decomposes for example into the 4 segments in B. Note in (B) the variable size of the gaps between conserved segments pinpointing the different evolutionary story that the two lineages have undergone with a large segmental deletion occurring in one of the lineages (or an insertion in the other).