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Some Phases of Wool Inheritance in F₁ Generation

Wool Department, Wyoming Experiment Station

Abstract

In a study of data obtained from a crossbreeding experiment with Hampshires and Rambouillets now in progress at the Wyoming Station, some very interesting facts were brought out in a study of fineness and density in the parents and in the F₁ crossbreds. The principal object of the experiment is to find out if Mendelian inheritance exists in wool fibers. The study of the F₂ crossbreds which will clip their first fleece in the spring of 1925 will determine this fact. However, the figures obtained in the F₁ crossbreds and their parents give us some interesting facts in regard to fineness anl density.

In this study of F₁ individuals, the lambs are divided into four groups according to breed and year of clip as follows:

This is a rather small number of individuals, but still the results are so uniform that they seem reliable within the limits of error.

¹ The writer wishes to acknowledges many helpful suggestions by Dean J. A. Hill, who planned the experiment, and measurements of a number of samples made by A. G. Hutton and H. F. Eaton, formerly in this department.