Evolution happens. But it can also stop and turn on a dime.
A new study of lizards in the Bahamas shows that the natural selection pressures that drive evolution can flip-flop faster than previously thought – even in months.
“Darwin was right about so many things,” said Jonathan Losos, a former Washington University biologist who led the study. “In this case he was wrong. He thought that evolution must occur slowly and gradually.”
The lizards and their changing leg lengths are yet another case of evolution occurring in real time. From finches that evolve longer beaks in a few years to bacteria that adapt to strange feeding regimens in days, evolution, as a science, has leapt out of musty museums and into the field.
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