Evo Devo is evolutionary development biology, the third revolution in evolutionary biology. The first was marked by the publication of The Origin of Species. The second occurred in the early twentieth century, when Darwin's theories were merged with the study of genetics. Now the insights of Evo Devo are astonishing the biology world by showing how the endless forms of animals — butterflies and zebras, trilobites and dinosaurs, apes and humans, are made and evolved.

Perhaps the most surprising finding of Evo Devo is the discovery that a small number of primitive genes led to the formation of fundamental organs and appendages in all animal forms. The gene that causes humans to form arms and legs is the same gene that causes birds and insects to form wings, and fish to form fins; similarly, one ancient gene has led to the creation of eyes across the animal kingdom. Changes in the way this ancient tool kit of genes is used have created all the diversity that surrounds us.

Sean Carroll is the ideal author to lead the curious on this intellectual adventure — he is the acknowledged leader of the field, and his seminal discoveries have been featured in Time and the New York Times.

"Cobb County textbook stickers aside, evolutionary natural selection offers a pretty straightforward explanation for the forward march of species through history; a mutation that better equips a given organism to survive is passed along to its heirs, becoming more common as successive generations flourish. The actual process by which mutations happen, however, was far more mysterious until scientists turned to the study of evolutionary development (known by the somewhat unfortunate moniker 'Evo Devo'). One such scientist is Carroll, a genetics professor at the University of Wisconsin — Madison, who guides us along the broad contours of development ('the process through which a single-celled egg gives rise to a complex, multibillion-celled animal') and the ways in which its study sheds light on the underlying mechanisms of evolution. He explains in concrete terms how small changes in a species's genetic code of a given species can lead to dramatic differences in physiology is the 'missing piece' of evolutionary theory, Carroll argues. The book is as much a salvo in the continuing battles between creationists and evolutionists as it is a popularization of science, and Carroll combines clear writing with the deep knowledge gained from a lifetime of genetics research, first laying out the principles of evolutionary development and then showing us how they can explain both the progression of species in the fossil record and outliers like a six-fingered baseball pitcher." Publishers Weekly (Copyright Reed Business Information, Inc.)

"Carroll is...a gifted writer. In a breathtakingly effortless manner, he builds on complex concepts....His topic is crucial, involving the recent and profound contributions of embryology and development to our understanding of the evolution of life's diversity." Library Journal

"Admittedly, taking in all the details of these discoveries in the early chapters can be heavy going, but if the reader persists, there are delights to come....Deserves to find its way into schoolrooms across the nation." Kirkus Reviews

"Carroll...writes in a lively style, peppering the book with endlessly fascinating examples that are beautifully illustrated by color and black-and-white drawings and photographs." Scientific American

As described in this fascinating book, Evo Devo is evolutionary development biology, the third revolution in the science, which shows how the endless forms of animals — butterflies and zebras, trilobites and dinosaurs, apes and humans — were made and evolved.