The Journal of Heredity 1985:76(4):303-304
© 1985 The American Genetic Association 76:303-304
other |
Inheritance of tweed, a modification of merle, in Australian shepherd dogs
The authors are, respectively, assistant professor at the Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061; and assistant professor in the Department of Biology, Texas A&M University, College Station, TX 77843. The provision of the data by the genetics committee of the Australian Shepherd Club of America is gratefully acknowledged.
Abstract
An autosomal mutation is responsible for the modification of merle coat color (previously indicated to be due to a transposable DNA element) to the tweed merle pattern in the Australian shepherd dog. The tweed merle pattern consists of color patches that have a greater range in the intensity of the dilute patches and tend to be larger than the patches of nontweed merle. It has no action on nonmerte dogs. The symbol Tw is proposed for this gene.