Figure 4.

A visual depiction of the scores of different input combinations for the Hb gene in the gap gene network, omitting autoregulation. The graph structure depicts the partial ordering of all possible input combinations, with the no-inputs case at the bottom and all possible inputs at the top. The colors within the circles indicate the genes participating in the combination, as laid out in the key at the upper right. The size of each circle is inversely related to the error obtained by using that combination, so that small circles indicate high error and large circles indicate the smallest error.