TABLE OF CONTENTS 



CHAPTER PAGE 



I. The Background of Genetics i 



II. The Inheritance of Acquired Char.\cters . . 12 



III. Mendel's Law 37 



IV. The Factor Hypothesis 56 



\'. Inheritance of Quantitative Characters 72 



VI. Linkage q6 



\TL Mutation 109 



VIII. Bud Variation 119 



IX. The Gametophyte in Inheritance . .128 



X. Sterility 131 



XL The Endosperm in Inheritance . . . . 14^ 



XII. Hybrid Vigor 156 



XIII. Sex Determination iSi 



Index -o7 



VII 



