For the mathematically minded scientists at Wistar, doubts about the creative power of the mechanism of random mutation and natural selection stemmed from the elucidation of the nature of genetic information and the confirmation of Francis Crick’s sequence hypothesis during the early 1960s. The discovery that DNA stores information as a four-character digital code raised questions about the efficacy of random mutational changes in producing such information—or at least enough of it to produce a novel protein structure and therefore any major innovation during the history of life. Murray Eden
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