The Coiled Spring starts with the most fundamental of premises in modern developmental biology: All cells contain the same genetic information.
He then logically progresses to ask, if this is so, why all cells in the body are not the same. The rest of the book (and indeed embryogenesis) answers this question.
In addition to highlighting the common basis for embryogenesis in flies and vertebrates, the book explores our understanding of parallel problems in plant development. Unlike flies and vertebrates, plants achieved multicellularity independently from animals. They therefore evolved embryogenic processes on their own. As the second great experiment in multicellular development, plants can be compared and contrasted with animal development to teach us the universal aspects of forming an organism and to provide examples of alternative solutions to achieving that end.

 

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