A. Rechtsteiner and M. A. Bedau, "A Generic Model for Quantitative Comparison of Genotypic Evolutionary Activity". To appear D. Floreano, J.-D. Nicoud, F. Mondada, eds., Fifth European Conference on Artificial Life (pp. ??-??). Heidelberg: Springer-Verlag.

We use a new general-purpose model of neutral evolution of genotypes to make quantitative comparisons of diversity and adaptive evolutionary activity as a function of mutation rate among two versions of Packard's Bugs model and their neutral shadows. Comparing diversity and evolutionary activity of all these models across the mutation rate spectrum shows that the generic neutral model may have broad applicability in discovering quantitative laws involving adaptive evolutionary activity in different evolving systems.