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The Journal of Heredity 1979:70(5):352-353
© 1979 The American Genetic Association 70:352-353

other

Gene duplication at an isocitrate dehydrogenase locus in Scaphiopus

PAUL W. SATTLER, and JOHN S. MECHAM

The author is affiliated, respectively, with theDepartment of Biology, College of the Southwest Hobbs, New Mexico, 88240, and the Department of Biological Sciences and the Museum, Texas Tech University Lubbock, TX 79409

Abstract

Spadefoot toads of the subgenus Scaphiopus have two isocitrate dehydrogenase loci, with no intergenic inter-action between them. Toads of the subgenus Spea have three ldh loci. with intergenic enzymes formed between two of them, providing strong evidence for their homology and the origin of one through a duplication process. The ldh phenotype of interspecific hybrids is consistent with the theory of a gene duplication.


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