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CONTENTS 



1 Genetics, Cells, and Chromosomes 1 



2 Chromosomes and Genes 16 



3 Genes and Characters 30 



4 Reproduction and Meiosis 47 



5 Special Chromosomes and Sex Inheritance 68 



6 The Genetic Distribution of a Pair of Alleles Located 



in Autosomes 80 



7 The Genetic Distribution of Genes in the X and Y 



Chromosomes 95 



8 Probability 108 



9 The Distribution of Two or More Pairs of Alleles in 



Two or More Chromosomes 124 



10 The Genetic Distribution of Two Pairs of Genes on 



One Pair of Chromosomes 147 



11 Locating Genes on Chromosomes 171 



12 Chromosome Maps 186 



13 Miscellaneous Linkage Topics 202 



14 The Nature of and Changes in Genes 219 



15 The Nature of Gene Mutations 230 



16 The Induction of Gene Mutations 243 



17 Radiation, Evolution, and the Position Effect 263 



18 Multiple Alleles 271 



XI 



83595 



