Molecular Biology and Evolution, Vol 5, 154-166, Copyright © 1988 by Society for Molecular Biology and Evolution
VH Cohn and GP Moore
The alcohol dehydrogenase (Adh) gene was isolated from Drosophila simulans
and D. mauritiana, and the DNA sequence of a 4.6-kb region, containing the
structural gene and flanking sequence, was determined for each. These
sequences were compared with the Adh region of D. melanogaster to
characterize changes that occur in the Drosophila genome during evolution
and to identify conserved sequences of functional importance. Drosophila
simulans and D. mauritiana Adh are organized in a manner similar to that of
D. melanogaster Adh, including the presence of two promoters for the single
Adh gene. This study identified conserved flanking elements that, in
conjunction with other studies, suggest regions that may be involved in the
control of Adh expression. Inter- and intraspecies comparisons revealed
differences in the kinds of sequence changes that have accumulated.
Sequence divergence in and around the Adh gene was used to assess inter-
and intraspecies evolutionary relationships. Finally, there appears to be
an unrelated structural gene located directly 3' of the Adh transcribed
region.
ORIGINAL ARTICLE
Organization and evolution of the alcohol dehydrogenase gene in Drosophila
Division of Biological Sciences, University of Michigan, Ann Arbor.
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