- List of Illustrations*
- Preface
- 1. Viva Pangenesis
- 2. Reversion to the Mean
- 3. Galton’s Disciples
- 4. Pangenes
- 5. Mendel
- 6. Rediscovery
- 7. Mendel Wars
- 8. Cell Biology
- 9. Sex Chromosomes
- 10. The Fly Room
- 11. Oenothera Reconsidered
- 12. X-Rays
- 13. Triumph of the Modern Gene
- Epilogue
- Notes
- Acknowledgments
- Index
- * Illustrations
- Charles Darwin and Francis Galton
- Portrait of Galton as a young man
- Galton’s first quincunx
- Schematic of quincunx
- Graph of inheritance in size of sweet pea seeds
- Rate of regression in hereditary stature
- Ellipse
- Walter Frank Raphael Weldon
- Illustration of sum of two normal curves
- A diagram for heredity
- Pedigree chart for tricolors
- Hugo de Vries
- The “handsome” portrait of Mendel
- Four kinds of fertilization
- William Bateson
- Karl Pearson and Francis Galton (age 87)
- Darbishire’s illustration of ancestry of Japanese waltzing mice
- Edward Beecher Wilson (1890)
- Nuclei of Ascaris
- Eleven chromosome pairs
- Eleven longitudinally split chromosomes
- Process of spermatogenesis
- Thomas Hunt Morgan (1891)
- Sex-linked inheritance
- Chiasma, from Janssens
- Crossing over
- The Fly Room, circa 1912
- Muller’s illustration of gene mapping
- Muller’s illustration of double crossover
- Gene nomenclature
- Truncate flies
- Muller and Altenburg, circa 1919
- Muller in Austin, Texas, circa 1926
- The ClB chromosome
- Muller and Vavilov with Muller’s group
- The Star-Curly translocation
- Unequal crossing over in Bar
- Generation of a duplication
- Mechanism for reversion of Bar