Figure 4: Dot plots of conserved syntenic segments in three human and three mouse chromosomes.
From: Initial sequencing and comparative analysis of the mouse genome
For each of three human (a–c) and mouse (d–f) chromosomes, the positions of orthologous landmarks are plotted along the x axis and the corresponding position of the landmark on chromosomes in the other genome is plotted on the y axis. Different chromosomes in the corresponding genome are differentiated with distinct colours. In a remarkable example of conserved synteny, human chromosome 20 (a) consists of just three segments from mouse chromosome 2 (d), with only one small segment altered in order. Human chromosome 17 (b) also shares segments with only one mouse chromosome (11) (e), but the 16 segments are extensively rearranged. However, most of the mouse and human chromosomes consist of multiple segments from multiple chromosomes, as shown for human chromosome 2 (c) and mouse chromosome 12 (f). Circled areas and arrows denote matching segments in mouse and human.
