Synopsis The present book entitled "Analytic Genetics of Animal Development" has been written with the feeling that is will reflect the facts of genetical biology which will be usefully serve the purpose of the university students. Emphasis has been laid on basic as well as new concepts of the genes as the structural and functional unit of life. To make the matter more understandable many new and well informative diagrams have been incorporated wherever they are needed. It is hopefully designed to open the gates to a broad field of knowledge which can be an endless fascination.