To: ~digs who wrote (1219 ) 12/29/2004 1:45:03 PM From: TigerPaw Respond to of 69300 The scientists found that the human brain's genes had gone through an intense amount of evolution in a short amount of time - a process that far outstripped the evolution of the genes of other animals. guardian.co.uk This article is rather sensational. Rapid evolution and periods of stasis is the hallmark of punctuated equalibrium. Well adapted lifeforms do not evolve much at all, and changes are swallowed into the gene pool. At times of change however, the changes can be quite rapid and specific. This is not unique to humans, it is just that brain development happened to be the area where humans found their need and advantage. "We've proven that there is a big distinction," Prof Lahn said. "Human evolution is, in fact, a privileged process because it involves a large number of mutations in a large number of genes. "To accomplish so much in so little evolutionary time - a few tens of millions of years - requires a selective process that is perhaps categorically different from the typical processes of acquiring new biological traits." It is very common for these types of articles to compare some datum to Darwin's original theory of gradual natural selection and ignore the 150 years of development since then. As humans become more social, differences in intelligence will translate into much greater differences in fitness, because you can manipulate your social structure to your advantage," he said. "Even devoid of the social context, as humans become more intelligent, it might create a situation where being a little smarter matters a lot. "The making of the large human brain is not just the neurological equivalent of making a large antler. Rather, it required a level of selection that's unprecedented."It is similar to the level of selection for resistance to the something like the Black Plague, or an insects resistance to DDT. TP