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  1. How the discovery of ribozymes cast RNA in the roles of both chicken and egg in origin-of-life theories.Neeraja Sankaran - 2012 - Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 43 (4):741-750.
    Scientific theories about the origin-of-life theories have historically been characterized by the chicken-and-egg problem of which essential aspect of life was the first to appear, replication or self-sustenance. By the 1950s the question was cast in molecular terms and DNA and proteins had come to represent the carriers of the two functions. Meanwhile, RNA, the other nucleic acid, had played a capricious role in origin theories. Because it contained building blocks very similar to DNA, biologists recognized early that RNA could (...)
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