Scale-free networks in biology: new insights into the fundamentals of evolution?

Bioessays. 2002 Feb;24(2):105-9. doi: 10.1002/bies.10059.


Scale-free network models describe many natural and social phenomena. In particular, networks of interacting components of a living cell were shown to possess scale-free properties. A recent study((1)) compares the system-level properties of metabolic and information networks in 43 archaeal, bacterial and eukaryal species and claims that the scale-free organization of these networks is more conserved during evolution than their content.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Archaea / physiology*
  • Bacterial Physiological Phenomena*
  • Biological Evolution*
  • Eukaryotic Cells / physiology*
  • Models, Biological*