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 Licks? VH1 wrote that the single and other tracks from "The Notorious K.I.M." have a "glossier and far more commercial" sound than the rapper's previous releases. The lyrics of "How Many Licks?" are part of a movement in 1990s hip hop music to express sexuality positively. Sexuality studies professor Thomas A. Foster wrote that Lil' Kim reverses a trend in hip hop music which objectifies women for the male gaze and celebrates male sexuality. Gender studies scholar Aine McGlynn described "How Many Licks?" as one of the most sexually-explicit songs to receive airplay. The lyrics describe a woman's interest in oral