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The Journal of Heredity 1978:69(1):57-58
© 1978 The American Genetic Association 69:57-58

other

Gene activation of alcohol dehydrogenase in danio hybrids

JACK S. FRANKEL

Dr. Frankel is graduate assistant professor of zoology, Howard University, Washington, D.C. 20059.

Abstract

The regulation of alleles encoding the enzyme alcohol dehydrogenase (ADH) was investigated in F1, Brachydanio hybrids (zebra danio female x spotted danio male) by acrylamide gel electrophoresis. Both parental species showed a single, cathodal band of species-specific ADH. During development at 26°C, hybrid fry showed a preferential activation of the maternally derived Adh allele. It is suggested that the low activity of the paternally derived allele may result from an incompatibility between maternal regulatory factors and the paternal regulative element controlling gene expression.


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