abstract = "How do genetic systems gain information by
evolutionary processes? Answering this question
precisely requires a robust, quantitative measure of
information. Fortunately, fifty years ago Claude
Shannon defined information as a decrease in the
uncertainty of a receiver. For molecular systems,
uncertainty is closely related to entropy and hence has
clear connections to the Second Law of Thermodynamics.
These aspects of information theory have allowed the
development of a straightforward and practical method
of measuring information in genetic control systems.
Here this method is used to observe information gain in
the binding sites for an artificial `protein' in a
computer simulation of evolution. The simulation begins
with zero information and, as in naturally occurring
genetic systems, the information measured in the fully
evolved binding sites is close to that needed to locate
the sites in the genome. The transition is rapid,
demonstrating that information gain can occur by
punctuated equilibrium.",
size = "6 pages",
notes = "This is a *true* genetic algorithm in the sense that
it uses the genetic algorithm method to show how
information gain occurs in living organisms.
'Roman arch' - stands up after scaffolding is removed.
onemax, unitation. Coevolution of binding sites and
recogniser gene.",