MBE | The evolutionary genomics of meiotic drive
Meiotic drivers gain transmission advantages by distorting equal, Mendelian segregation. This review discusses the evolutionary genomics of meiotic drive. The figure highlights the interactions of meiotic drive elements with other classes of selfish genetic elements including: direct interactions between drivers and transposable elements (TEs) (A) or satellites (C) that can facilitate the spread of drivers; other drive systems that cause the mutual destruction of all gametes (B; e.g. the presence of multiple toxin-antidote systems); indirect interactions where the host machinery responsible for silencing TEs are recruited to silence drivers (D); dosage-sensitive interactions involving sex-linked drivers that result in gene amplifications (E); and tradeoffs between suppressing drive and TEs (F).
For a new MBE Review, Presgraves et al. argue that many features of genome evolution, content, and organization seemingly inexplicable by adaptation or nearly neutral processes are instead best accounted for by meiotic drive.
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