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Figure 1.2.
Replication of DNA molecules. Each strand acts as a template for a
new, complementary strand. When copying is complete, there will be two daughter
DNA molecules, each identical in sequence to the mother molecule.
DNA, control of gene expression, and creation of genetic diversity. For our
purposes, though, it is only necessary to understand the role they play in
evolution, especially how genetic modification is created and how this ge-
netic diversity reflects itself in the numerous protein variants available in the
genetic pool of a species.
In nature, the incredible diversity of all organisms, living and extinct, is
largely a consequence of the effects of the restructuring processes that take
place on the genomes of the organisms, creating a diversity of protein func-
tions. Likewise, in GEP, populations of individuals (computer programs)
evolve by developing new abilities and becoming better adapted to the envi-
ronment due to the genetic modifications accumulated over a certain number
