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  INHERITANCE OF CHARACTERISTICS IN DOMESTIC FOWL.


  BY

  CHARLES B. DAVENPORT,

  DIRECTOR OF THE STATION FOR EXPERIMENTAL EVOLUTION, CARNEGIE
  INSTITUTION OF WASHINGTON.


  [Illustration]


  WASHINGTON, D. C.
  PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON. 1909




  CARNEGIE INSTITUTION OF WASHINGTON PUBLICATION NO. 121.

  PAPERS OF THE STATION FOR EXPERIMENTAL EVOLUTION, NO. 14.


  PRESS OF J. B. LIPPINCOTT COMPANY PHILADELPHIA




  TABLE OF CONTENTS.


                                                                PAGE

    INTRODUCTION                                                   3

    CHAPTER I. THE SPLIT OR Y COMB                                 5
        A. Interpretation of the Y Comb                            5
        B. Variability of the Y Comb and Inheritance of the
             Variations                                           12

    CHAPTER II. POLYDACTYLISM                                     17
        A. Types of Polydactylism                                 17
        B. Results of Hybridization                               18

    CHAPTER III. SYNDACTYLISM                                     29
        A. Statement of Problem                                   29
        B. Results of Hybridization                               32

    CHAPTER IV. RUMPLESSNESS                                      37

    CHAPTER V. WINGLESSNESS                                       42

    CHAPTER VI. BOOTING                                           43
        A. Types of Booting                                       43
        B. Normal Variability                                     43
        C. Results of Hybridization                               46

    CHAPTER VII. NOSTRIL-FORM                                     59

   