Aimed primarily at a general readership and college students of biology, this book focuses on the question of how embryonic development changes in the course of evolution, thus giving rise to new types of creatures. It takes the view that biases in the ways that embryos can be altered are as important as natural selection in determining the directions that evolution has taken, including the one that led to the origin of humans.

This book is aimed at students taking courses on evolution in universities and colleges. Its approach and its structure are very different from previously-published evolution texts. The core theme in this book is how evolution works by changing the course of embryonic and post-embryonic development. In other words, it is an evolution text that has been very much influenced by the new approach of evolutionary developmental biology, or 'evo-devo'.

Key themes include the following: developmental repatterning; adaptation and coadaptation; gene co-option; developmental plasticity; the origins...

What do we know about animal evolution in the early twenty-first century? How much more do we know today than Darwin did? What are the most exciting discoveries that have been made in the last few decades? Covering all the main animal groups, from jellyfish to mammals, this book considers all of these questions and more. Its 30 short chapters, each written in a conversational, nontechnical style and accompanied by numerous original illustrations, deal equally with the pattern and the process of evolution - with both evolutionary trees and evolutionary mechanisms. They cover diverse...