Science. 2017 Jun 9;356(6342):1051-1055. doi:10.1126/science.aan0621

Ben-David E, Burga A, Kruglyak L.

A maternal-effect selfish genetic element in Caenorhabditis elegans.

The sup-35 gene is a paralog of rmd-2 that hijacks developmental regulators to terminate embryogenesis. It is inhibited by pha-1, which was thought to be an essential developmental regulator by itself, but is dispensable in the absence of sup-35.