This paper discusses the evolution of diversifying reproduction. We
measured the average difference between mothers and their children,
the number of species, and the degree of adaptation in evolving
populations of endogenously diversifying digital
organisms
using the
Pushpop system. The data show that the number of
species in adaptive populations is higher than in non-adaptive
populations, while the variance in the differences between mothers
and their children is less for adaptive populations than for
non-adaptive populations. In other words, in adaptive populations
the species were more numerous and the diversification processes
were more reliable.