Category: Science - Biology
Heredity of color in the cross between Sebright and Black-Breasted Game bantam 17 A. The F₁ birds 18 B. Description of F₂ birds 19 C. Back-cross of F₁ to game 21 D. The number of color factors involved 22 E. Back-cross of F₁ ♀ to Sebright ♂ 23 F. Review of the heredity of the...
Heredity of color in the cross between Sebright and Black-Breasted Game bantam 17 A. The F₁ birds 18 B. Description of F₂ birds 19 C. Back-cross of F₁ to game 21 D. The number o...
2. PART II.3. PART III.The genetic and the operative evidence 62 A. Evidence from mammals 64 B. Evidence from birds 73 C. Evidence from amphibia 86 D. Evidence from crustaceans 89 E. Evidence from ins...
4. PART IV.5. PART I.There are a few races of poultry that have two kinds of males, one with the feathering of the ordinary cock, the other with the feathering of the hen. The Hamburgs and the Campi...
6. PART II.Darwin seems to have felt the necessity of giving some other explanation for the secondary sexual differences between the male and female than that such differences were only a...
7. PART III.The genetic and operative evidence shows that there has been included under the general term “secondary sexual characters” a complex of cases that are the outcome of diverse phy...
8. PART IV.1. The two principal results obtained were: (_a_) that castration of hen-feathered Sebright males causes them to develop the full plumage characteristic of the cock-bird; (_b_)...