Journal
CURRENT OPINION IN CHEMICAL BIOLOGY
Volume 8, Issue 6, Pages 654-659Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cbpa.2004.10.005
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Metabolism and replication are generally considered essential features of biological life. Workers in the field of the origin of life are mostly split into two groups, depending on which of these two functions is postulated to have occurred first. Because of difficulties encountered by the replication-first (or genetics-first) approach, some workers have postulated that a highly developed metabolism must have originated before replication and the formation of a genetic apparatus. However, as supporters of a replication-first approach have pointed out, and as is discussed in this article, the alternative metabolism-first approach has fundamental problems that have not been sufficiently addressed.
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