In social sciences, atavism is the tendency of reversion. Recent research claims that "Pilosella officinarum" exhibits an atavism by the reemergence of sexual reproduction. Morton called it "Metatarsus atavicus", considering it an atavism recalling prehuman grasping toes. The presence of these kind of vestigial structures is known as an atavism. "Throwback" is a classic science fiction short story featuring atavism by L. Sprague de Camp. Lombroso's theory of atavism compared white civilization and other races with "primitive" or "savage" societies. Tan postulated that this is an example of "reverse evolution" (atavism). It is possible that Beast's mutation is a result of genetic atavism. Such a re-emerged trait is called an atavism. Atavism or atavistic is a concept in biology and in culture. On March 24th, 2020, Screeching Weasel released their 13th album, Some Freaks of Atavism. Their most recent album, "Atavism", was released in 2009 by Raster-Noton.