## Evolution and the Genetics of Populations, Volume 1: Genetic and Biometric Foundations"Wright's views about population genetics and evolution are so fundamental and so comprehensive that every serious student must examine these books firsthand. . . . Publication of this treatise is a major event in evolutionary biology."-Daniel L. Hartl, BioScience |

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### Contents

Introduction | 3 |

Modes of Inheritance and Reproductive Cycles | 13 |

The Gene | 23 |

Nongenic Heredity | 41 |

Gene and Character | 55 |

Types of Biological Frequency Distributions | 108 |

Statistical Description of Frequency Distributions | 142 |

Compound Distributions and Variables | 153 |

Analysis of Actual Frequency Distributions | 247 |

Description of Multivariate Distributions | 275 |

Path Analysis Theory | 301 |

Interpretation by Path Analysis | 327 |

The Genetics of Quantitative Variability | 375 |

Conclusions | 423 |

434 | |

459 | |

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### Common terms and phrases

alleles analysis array assumed average backcross birth weight cells characters chromosomes classes coefficients of variability color complete components correlation crosses curve cytoplasmic data of Wright degrees of freedom determined dominance Drosophila Drosophila melanogaster effects equations estimate evolution factors Figure formula frequency distribution function gametes genes genotype give given grade guinea pigs haploid heredity heterozygotes homozygotes hypothesis important inbred strains independent indicated individuals interaction interpretation large number length less linear lines linkage litter little toe locus maize males mating mean meiosis Mendelian meristic mode multiple mutations normal distribution number of loci observed occur organisms pairs parental strains path coefficients pattern percentage physiological plastids pleiotropy population genetics probability produced Pxpx random ratio Redrawn from Fig regression relation represented residual respect sample scale segregation selective value semidominance shows significant species squared standard deviation standard error statistics Table theory threshold tion variance