CONTENTS 



CHAPTER PACE 



I. Introduction . . .... ... i 



II. Earixer Theories of Heredity 4 



III. The Inheritance of Acquired Characters . 16 



IV. Mendel's Law 28 



V. Neo-Mendelism 40 



VI. Neo-Mendelism (Continued) . . -52 



VII. Neo-Mendelism {Continued) . . -63 



VIII. Neo-Mendelism (Continue) . . ... 76 



IX. Neo-Mendelism {Concluded) 86 



X. Non-Mendelian Inheritance 97 



XI. Modification of Unit Characters 104 



XII. Parthenogenesis and Vegetative Apogamy . 115 



XIII. Inheritance in Gametophytes . .123 



XIV. Self-Sterility -133 



XV. The Endosperm in Inheritance . 144 



XVI. Hybrto Vigor 158 



XVII. Sex Determination 177 



XVIII. The Bearers of Hereditary Characters . . 198 



Index . 2C59 



ix 



