Transposable elements suppress recombination in all meiotic eukaryotes, including automictic ancient asexuals: a reply to Schon and Martens
Transposable elements suppress recombination in all meiotic eukaryotes, including automictic ancient asexuals: a reply to Schon and Martens
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DOI：
10.1080/0022293021000007705
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发表时间：
2003-04-20
影响因子：
0.8
通讯作者：
Gorelick, R
中科院分区：
文献类型：
--
作者：
Gorelick, R
我讨论了三个问题，即古代无性谱系缺乏减数分裂和重组，导致（可能不利的）转座元件和其他形式的重复 DNA 的减少。首先，所有古代无性生物可能都是自体生殖的，因此可以以基因转换的形式保留减数分裂重组。其次，转座元件改变重组率，而不是相反。第三，增加转座元件和其他形式的重复DNA的数量会降低减数分裂重组率。古代无性生物缺乏通过异型杂交传播的转座因子，这与减数分裂重组无关。
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.