Figure 1

Two-dimensional plot of mutation bias versus minimal contrast. Two-dimensional plot of mutation bias versus minimal contrast of all 1-4 bp mutation contexts. Several exclusive clusters are outlined. The small orange cluster contains {C > T|1,CG} and {G > A|2,CG} contexts. It can be discerned by minimal contrast from the large orange cluster that contains all 3-4 bp contexts with {C > T|1,CG} and {G > A|2,CG} subcontexts and only such contexts. The red cluster contains six 4 bp contexts distinguishable by both minimal contrast and mutation bias.