1. Evolutionary Biology

2. Species Concepts and Their Application

3. Morphological Species Characters and Sibling Species

4. Biological Properties of Species

5. Isolating Mechanisms

6. The Breakdown of Isolating Mechanisms (Hybridization)

7. The Population, Its Variation and Genetics

8. Factors Reducing the Genetic Variation of Populations

9. Storage and Protection of Genetic Variation

10. The Unity of the Genotype

11. Geographic Variation

12. The Polytypic Species of the Taxonomist

13. The Population Structure of Species

14. Kinds of Species

15. Multiplication of Species

16. Geographic Speciation

17. The Genetics of Speciation

18. The Ecology of Speciation

19. Species and Transpecific Evolution

20. Man as a Biological Species

Glossary

Bibliography

Index

Ernst Mayr is Alexander Agassiz Professor of Zoology, Emeritus, at Harvard University. He is also the recipient of numerous honorary degrees and awards, including the Crafoord Prize for Biology, the National Medal of Science, the Balzan Prize, and the Japan Prize.

Read More by Ernst Mayr:

• Evolution and the Diversity of Life: Selected Essays
• This Is Biology: The Science of the Living World
• The Growth of Biological Thought: Diversity, Evolution, and Inheritance
• One Long Argument: Charles Darwin and the Genesis of Modern Evolutionary Thought
• Populations, Species, and Evolution, An Abridgment of <i>Animal Species and Evolution</i>
• Toward a New Philosophy of Biology: Observations of an Evolutionist
• The Evolutionary Synthesis: Perspectives on the Unification of Biology, With a New Preface
• Systematics and the Origin of Species from the Viewpoint of a Zoologist