In this morning's news:
http://www.sciencedaily.com/releases...0422150659.htm
Nurture Over Nature: Certain Genes Are Turned On Or Off By Geography And Lifestyle, Study Suggests
...."The most important implication of this study is that people with the same genetic makeup can be in different environments and have different expression profiles," Idaghdour says. "The same gene can be expressed in the city but not in a rural place because of the environment. So you must look at the environment when studying associations between genes and disease."....