FIGURE 4
FROM:
Deriving structure from evolution: metazoan segmentation
Paul François, Vincent Hakim & Eric D Siggia
doi:10.1038/msb4100192
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Stages in the evolution of sequential segmentation for a morphogen gradient moving to the right. (A) Evolution of the best network fitness as a function of the number of generations. (B–D) The letters correspond to the network topologies and protein profiles in the three subsequent panels following the conventions in Figure 3. (E) Final profile produced by network of (D) for twice as long an embryo showing regular spacing of the stripes. See the text for details and Supplementary Information for other examples.
