THE PROBLEMS OF HEREDITY AND THEIR SOLUTION, pp. 1–39.
Preliminary statement of Mendel’s principles, 8. Relation of Mendel’s
discovery to the law of Ancestral Heredity, 19. _Heterozygote_ and
_Homozygote_, 23. New conceptions necessitated by Mendel’s discovery,
26. Simple alternative characters, or _allelomorphs_, 27. _Compound
allelomorphs_ and their components, 29. Analytical Variations, 29.
Relation of Mendel’s principle to continuous variation, 32. Dominance,
32. Non-Mendelian phenomena, 33. False hybrids of Millardet, 34. Brief
historical notice, 36.
MENDEL’S EXPERIMENTS IN PLANT HYBRIDISATION, pp. 40–95.
Introductory Remarks, 40. Selection of Experimental Plants, 42.
Division and Arrangement of Experiments, 44. Characters selected, 45.
Number of first crosses, 47. Possible sources of error, 47. Forms of
the Hybrids, 49. Dominant and recessive, 49.
First generation bred from the Hybrids, 51. Numbers of each form in
offspring, 52. Second generation bred from the Hybrids, 55. Subsequent
generations bred from the Hybrids, 57.
Offspring of Hybrids in which several differentiating characters are
associated, 59. The reproductive cells of the Hybrids, 66. Statement
of Mendel’s essential deductions, 67. Experiments to determine
constitution of germ-cells, 68. Statement of purity of germ-cells, 72.
Experiments with _Phaseolus_, 76. Compound characters, 80. Concluding
Remarks, 84.