Demonstrations of methods and results of pedigree breeding of plants and animals

Abstract

Four series of pedigreed poultry were shown to illustrate certain laws of inheritance.

Series I. Darwin's case of “reversion”:

1, Jungle fowl; 2, black minorca and 3, white silky, female; 4, their son, black with red markings as in the jungle fowl; 5, second hybrid generation, including (a), white type and (b), type with jungle fowl coloration.

Series II. The production of a frizzle-silky race:

1, Silky, male; 2, frizzle, female; 3, first hybrid generation, frizzled but not silky; 4, second hybrid generation, both frizzled and silky feathers in the same individual.

Series III. Particulate inheritance of plumage color:

1, Game colored Tosa fowl, male; 2, white cochin, female; 3, son of 1 and 2, game colored, feathers barred with white; 4, second hybrid generation: (a), white type; (b), game type.

Series IV. Independence in inheritance of the different characters:

I, White leghorn, male; 2, Houdan, female (mottled, black and white); 3, son of I and 2, white, small crest, Y comb, low nostril, four toes on each foot; 4, second hybrid generation, white, high nostril, no crest, heavy muff, four toes.

Demonstration of inheritence of characters in canaries.

Series I. Pure crest, crossed with crestless. Offspring all crested. Second hybrid generation includes both crested and crestless birds.

Series II. Inheritance of plumage color : Green canaries crossed with yellow canaries give mottled offspring. Descendants of these mottled offspring include some yellow and also some green birds.

Demonstration of Œnothera (evening primrose) and its mutants.

Demonstration of branching and branchless sunflower.

Demonstration by Miss Luts of variability of chromosomes in Œnothera and its mutants.

Demonstration by Mr. F.E. Luts of inheritence of abnormal wing venation in the vinegar fly, Drosophila.