  We study the probabilities of evolution based on random mutations and natural
selection. We conclude that evolution to multicellular eukaryots, or even
prokaryots, is unlikely to be the result of only random mutations. Complex
organisms have evolved through several mechanisms besides random mutations,
namely DNA recombination, adaptive mutations, and acquisition of foreign DNA.
We conclude that all living organisms, in addition to being self-organizing and
reproducing (autopoyetic), have built-in mechanisms of evolution, some of which
respond in very specific ways to environmental stress.
