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
The Soul of a Butterfly The Soul of a Butterfly The Soul of a Butterfly is the autobiography of Muhammad Ali, born Cassius Marcellus Clay Jr., a former heavyweight boxer who was a three time World Heavyweight Champion and is considered by many to be the greatest heavyweight of all time. It is written in collaboration with his daughter, Hana Yasmeen Ali. It is not a comprehensive autobiography but a breakdown of the important events and experiences in his life; this is suggested in the book's subtitle, "Reflections on Life's Journey". The book includes some of his and his daughter's poetry, and snippets of Sufi