Waldir M.
Berbel-Filho is in the Department of Biology, University of West Florida, Pensacola, Florida 32514, USA.
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Thousands of species produce genetically identical (clonal) offspring through asexual reproduction 1 .
However, asexual reproduction is much less common than sexual reproduction is, partly because it is thought to exert detrimental effects on the genome.
Writing in Nature , Ricemeyer et al.
2 explore the molecular mechanism that has enabled an asexual fish species to survive longer than theory predicts.
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The author declares no competing interests.
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