In this study we report the electrophoretic karyotype of strains representing 14 races of U. hordei. A high degree of karyotypic variability was observed among individual strains representing each of the races but not among strains derived from individual meiotic tetrads, although the segregation of a chromosome length polymorphism in one meiotic tetrad was observed. The strains showed a high degree of similarity of the total soluble protein complement using sodium dodecyl sulfate (SDS)-PAGE. We have begun to define linkage groups using random DNA fragments
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Kevin McCluskey (1990) studied this question.