All vertebrate embryos follow a common developmental path due to their common ancestry. All have a set of very similar genes (the homeobox genes) that define their basic body plan. As they grow, the ...

VERTEBRATE ZOOLOGY AN INTRODUCTION TO THE COMPARATIVE ANATOMY EMBRYOLOGY AND EVOLUTION OF CHORDATE ANIMALS BY GR DE BEER WITH AN INTRODUCTION BY JULIAN S HUXLEY ...

Much has been written of the early history of comparative embryology and its influence on the emergence of an evolutionary developmental perspective. However, this literature, which dates back nearly ...

The present theory offers a unified solution to three closely related evolutionary problems. (1) Why does an evolving population explore only a small fraction of the accessible pathways in genotype ...

Foreword page -- Preface -- Acknowledgements -- 1: What is Evo-Devo and Why is it Important? -- What is Evo-Devo? -- Origins of Evo-Devo: the Homeobox -- Origins of Evo-Devo: Other Factors -- Evo-Devo ...

THERE is a textbook for the Kitchener School of Medicine at Khartoum, and presumably the animals with which it deals form the syllabus of that School, together with some consideration of embryology, ...

An Introduction to the Comparative Anatomy, Embryology and Evolution of Chordate Animals. By Dr. G. R. de Beer. (Text-Books of Animal Biology.) New edition. Pp. xv ...