Tuesday, March 29, 2011
Biologists have been working on this question forever. (Darwin, despite the title of his book, really didn't nail it down). Now the computer geeks are having a go at it. Network theory indicates geographically localized mating increases diversity, but this works against assortative mating (mating with genetically similar individuals). This clash of forces fragments species into new ones. It's a lot more complicated than that, but this is an interesting insight.