  We compared the properties of the error threshold transition in quasispecies
evolution for three different topologies of the genome space. They are a)
hypercube b) rugged landscape modelled by an ultrametric space, and c) holey
landscape modelled by Bethe lattice. In all studied topologies the phase
transition exists. We calculated the critical exponents in all the cases. For
the critical exponent corresponding to appropriately defined susceptibility we
found super-universal value.
