Loss of complementation and the logic of two-step meiosis

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Meiosis is usually a two-step process: two divisions preceded by a duplication. One-step meiosis, a single division without prior replication, is a more logical way to produce haploid gametes; moreover, one-step meiosis leads to higher variabilty in the progeny than two-step meiosis. Yet one-step meiosis is very rare in nature, and may not even exist at all. I suggest that this is because one-step meiosis, in contrast to two-step meiosis, can be easily invaded and replaced by asexual reproduction. I discuss why other existing peculiar forms of division leading to the production of haploid gametes, but not one-step meiosis, have the same effect as two-step meiosis.

Original languageEnglish (US)
Pages (from-to)1098-1105
Number of pages8
JournalJournal of Evolutionary Biology
Issue number5
StatePublished - Sep 2004

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics


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