Figure 6.

Analysis of the network growth model analogous to the ones in Figures 3 and 4. (Top panel) Decay in organism degree (OD) as a function of distance from the most central node. (Bottom panel) The likelihood of finding two reaction nodes of the same OD k steps apart.

Bernhardsson et al. BMC Evolutionary Biology 2011 11:20   doi:10.1186/1471-2148-11-20
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