Scientists argue against selective sweeps

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Article reads: ‘Our findings suggest that recent human adaptation has not taken place through the arrival and spread of single changes of large effect, but through shifts of frequency in many places of the genome,’ says co-author Dr Molly Przeworski, a professor of Human Genetics and Ecology and Evolution at the University of Chicago in the US. ‘It suggests that human adaptation, like most common human diseases, has a complex genetic architecture.’

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