1 The Problem

2 The Evolutionary Significance of Genetic Diversity; Ecological, Demographic and Life History Correlates
The Problem
Materials and Methods
The Evidence
Theoretical Consideration
The Matching of Evidence and Theoretical Models
Conclusions and Prospects
Summary
Acknowledgements
References of the Data
References of the Theoretical Discussion
Appendix I. The Data Set
Appendix II. The Biotic Questionnaire
Appendix III. Transformations of Heterozygosity and Polymorphism Estimates
3 Genetic Polymorphism and Neomutationism
Protein Polymorphism
Dna Polymorphism
Implications for Evolutionary Theory
Acknowledgements
References
4 A Darwinian Theory of Enzyme Polymorphism
The Model
The Accuracy of the Numerical Calculations
Why Is Chaotic Motion Rare in Natural Populations?
Survival Probability for Populations
Predictions of the Model at the Genetic Level
Conclusions
References
5 The Possibility of Stress-Triggered Evolution.