Journal
JOURNAL OF MOLECULAR EVOLUTION
Volume 56, Issue 6, Pages 770-777Publisher
SPRINGER-VERLAG
DOI: 10.1007/s00239-003-2454-1
Keywords
recombination; origins of life; origins of sex; Muller's Ratchet
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Recombination is usually assumed to be a mode of reproduction that evolved long after asexual reproduction in response to specific genetic and environmental circumstances. Here the argument is made that recombination was an evolutionary development as ancient as the origins of life. To support this proposition four lines of evidence are given, in particular, the need for primordial genomes to acquire substantial length and to escape from Muller's Ratchet.
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