Hedgehogs, hedgehog, 17 species of hedgehog in five genera. A hedgehog is any of the spiny mammals of the subfamily Erinaceinae, which is in order Erinaceomorpha. There are found in Europe, Asia, Africa and New Zealand (by introduction). There are no hedgehogs native to Australia, nor the Americas.
Simulated Evolution is the umbrella name for a set of projects focused on using agent-based modeling to explore and learn about evolutionary processes.
The synthetic theory of evolution as described by Sewell Wright attempts to explain evolution in terms of changes in gene frequencies. This theory states that a species evolves when gene frequencies changes and the species moves it to a higher level of adaptation for a specific ecological niche.