If you want to thwart the Reaper, you better be prepared. And when Death (or rather Death's agent-in-training) comes for the last denizen of a gold-rush town, he finds the prospector more than ready for a game of roadrunner and coyote.
It's a proud day when the likes of Osiris, the Grim Reaper, and the avatars of Impermanence drop their children off for their first day of Death School. But Grim Jr. disappoints dear old dad when he proves more interested in making clothes than in reaping souls.
What better way to honor a famous character, creature or concept from science fiction or fantasy than to immortalize them with a scientific name? Specifically, the name of a gene.