4.0 Article

Transposable elements suppress recombination in all meiotic eukaryotes, including automictic ancient asexuals: a reply to Schon and Martens

Journal

JOURNAL OF NATURAL HISTORY
Volume 37, Issue 8, Pages 903-909

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/0022293021000007705

Keywords

methylation; 5-methylcytosine; heterochromatin; parthenogenetic; bdelloid; darwinulid; Darwinula; Artemia; automixis

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I discuss three problems with the argument that ancient asexual lineages lack meiosis and recombination resulting in a diminution of (potentially disadvantageous) transposable elements and other forms of repetitive DNA. First, all ancient asexuals are probably automictic, hence could retain meiotic recombination in the guise of gene conversion. Second, transposable elements alter recombination rates, not vice versa. Third, increasing the number of transposable elements and other forms of repetitive DNA reduces meiotic recombination rate. Ancient asexuals lack those transposable elements that are transmitted via outcrossing, and this has nothing to do with meiotic recombination.

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