That rate of evolution is pretty similar to what we see in plants and animals. Humans_don’_t_seem_to_be_any_exception,_the team said.

　　Other recent genetic research backs up that belief. One study by John Hawks, an anthropologist at the University of Wisconsin at Madison, found that some 1,800 human gene variations (变异) are common in recent generations because of evolution. Among the changes are mutations (突变) that allow people to digest milk or resist malaria(疟疾) and others that govern brain development.

　　Since the Industrial Revolution, modern humans have grown taller and stronger. It’ s easy to assume that evolution is making humans fitter. But according to anthropologist Peter McAllister, the contemporary male has evolved physically into “the sorriest example of male ever on the planet”. An average Neanderthal woman, McAllister notes, could have beat Arnold Schwarzenegger in an armwrestling (腕力) match. And early Australian Aborigines could easily defeat Usain Bolt in a 100-m dash.

　　However, Douglas Ewbank, of the University of Pennsylvania, says that cultural factors tend to have a much greater impact than natural selection on future generations, so people tend to ignore evolution’ s effects.

　　And, despite evidence indicating evolution still works, Steve Jones, an evolutionary biologist at University College London, thinks that the impact of evolution on humans is not the most important. “What makes humans what we are is in our minds, in our society, and not in our evolution，” said Jones.

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