Inheritance of Characteristics in Domestic Fowl

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
Chapter VIII. Crest	67
Chapter IX. Comb-lop	69
Chapter X. Plumage Color	71
A. The Gametic Composition of the Various Races	71
1. White	71
2. Black	72
3. Buff	72
B. Evidence	72
1. Silkie × Minorca (or Spanish)	72
2. Silkie × White Leghorn	75
3. Silkie × Buff Cochin	76
4. White Leghorn × Black Minorca	77
5. White Leghorn × Buff Cochin	77
6. Black Cochin × Buff Cochin	78
Chapter XI. Inheritance of Blue Color, Spangling, and Barring	79
A. Blue Color	79
B. Spangling	80
C. Barring	81
1. White Cochin × Tosa	81
2. White Leghorn Bantam × Dark Brahma	82
3. White Leghorn Bantam × Black Cochin	82
Chapter XII. General Discussion	85
A. Relation of Heredity and Ontogeny	INHERITANCE OF CHARACTERISTICS IN DOMESTIC FOWL. BY CHARLES B. DAVENPORT. 2 Clyx.com