How the Snake Lost Its Legs fly embryo. His books on evolutionary developmental biology (evo-devo) include "Imaginal Discs: The Genetic and Cellular Logic of Pattern Formation" (2002), "Quirks of Human Anatomy: An Evo-Devo Look at the Human Body" (2009), and "Deep Homology? Uncanny Similarities of Humans and Flies Uncovered by Evo-Devo" (2017). In Held's view, "Quirks", "Snake", and "Deep Homology" form a trilogy on evo-devo. "How the Snake Lost Its Legs" is ostensibly organised into six chapters, but in effect into three parts. The first chapter serves as an introduction and overview. The next four chapters provide what Held calls "the meatier aspects of evo-devo" with
How Many Fucks of "Los Angeles Magazine" called the song "an instant classic" and "amazing". A music video for "How Many Fucks" was released on April 19, 2016 and directed by Mikey Minden. In the video, Jayne wears several "rather risqué" costumes, including a "money-print dress" and shimmery clothing to appear as a "golden goddess". According to E! Online, several of the dance moves performed are not safe for work. Evan Real of "Us Weekly" described the video as Jayne "show[ing] off her killer curves in a variety of skin-baring ensembles as she cavorts across mini-movie's several sets." The video opens with Jayne