Tuesday, March 2, 2010

http://www.nytimes.com/2010/03/02/science/02evo.html?ref=science

This article is about how scientists are finding that culture has been influencing human evolution over the past thousands of years. One example was that a lot of northern Europeans had developed a gene that keeps the lactose digesting gene working. Generally the lactose digesting gene is shut down after weaning, but in these cattle based societies more offspring survived if they were able to digest lactose so the gene prevailed. It shows evolution in a very quick manner. This same thing has been found in African pastoral societies, however the mutation is different, but still with the same effect. It also has been found that Asians and Europeans generally have lighter skin color because of the climate they live in. Also scientists have found that the human skeleton has gotten lighter over the past thousands of years, this is probably due to the fairly recent invention of settled society. I think this is really cool because it basically proves evolution. It is also very cool how we have evolved so fast, usually this takes a lot more time, but in a matter of a couple thousand years we have changed. I think this is due to our sedimentary society and constantly changing society.

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