Color Inheritance of Geese: Study 2

FROM the data obtained in an earlier study, Jerome (1953) reported on the behavior of a number of characters in certain crosses of domestic geese. From that work it was possible to state that: neck stripe (Ns) is dominant to absence of neck stripe (ns): white breast patch (Wb) is dominant to absence of white breast patch (wb): and solid pattern (Sp) is dominant to spotted pattern (sp). However, because of the manner in which the crosses were arranged it was impossible to state whether the genes responsible for these characters were autosomal or sex-linked. A considerable portion of data obtained at that time was taken from the progenies of crosses in which the Emden (often spelled Embden) was one of the parent breeds. It was found that the Emden, although genetically a colored bird, became white as an adult due to the increasing effect of the sex-linked gene (Sd) …