Modularity and diameter.

<p>(A) Modularity and (B) diameter are both predicted to grow with time in human (green), yeast (blue), and fly (red). Light lines indicate the evolutionary trajectories of 50 individual simulations, and the heavy line is the median value. The modularity and diameter of the empirical data are shown as dashed horizontal lines. Time traces occasionally do not start at because these simulations spend the first few time steps in a completely disconnected state, so the dynamical quantities are undefined. (See Figure 9 for other dynamical plots.).