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Isolation and genetic characterization of alcohol dehydrogenase thermostability variants occurring in natural populations of Drosophila melanogaster by Bonnie Sampsell is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Drosophila melanogaster collected from natural populations were examined fo thermostability variants within electrophoretic mobility classes of two enzymes. In alcohol dehydrogenases, two discrete forms of the "slow" allozyme and three discrete forms of the "fast" allozyme were revealed by postelectrophoretic treatments ranging from 15 sec at 40 C to 40 sec at 43 C. All variants have been mapped to within 0.7 unit of the Adh locus. Results of a geographic survey indicate that two alleles giving rise to fast-moderate and slow-moderate allozymes are common everywhere; other variants have a collective frequency ranging from 0% to 7%. In a test of the possibility that the rare Adh alleles could be generated by intragenic recombination between the two common alleles, electrophoresis and heat treatment of progeny recombinant for flanking markers of Adh revealed no new allozymes. Among 27 stocks containing slow alpha-glycerophosphate dehydrogenase allozymes and 109 fast stocks, heat treatments revealed no additional variation.

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Author

Bonnie Sampsell

Publisher

Springer; Springer-Verlag; Kluwer Academic/Plenum Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0006-2928)

Published

1977

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)