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First Rule of Adaptive Evolution

Science Mag’s hit on Michael Behe’s new book Darwin Devolves avoids his main point

In American Association for the Advancement of Science’s magazine, Science,  we read, In the grand scheme of evolution, mutations serve only to break structures and degrade functions, Behe argues. He allows that mutation and natural selection can explain species- and genus-level diversification, but only through the degradation of genes. Something else, he insists, is required for meaningful innovation. Here, Behe invokes a “purposeful design” by an “intelligent agent.” There are indeed many examples of loss-of-function mutations that are advantageous, but Behe is selective in his examples. He dedicates the better part of chapter 7 to discussing a 65,000-generation Escherichia coli experiment, emphasizing the many mutations that arose that degraded function—an expected mode of adaptation to a simple laboratory environment, by the Read More ›