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Genet Res. 1996 Oct;68(2):117-23.

Genetics of a difference in cuticular hydrocarbons between Drosophila pseudoobscura and D. persimilis.

Author information

1
Department of Ecology and Evolution, University of Chicago, IL 60637, USA.

Abstract

We identify a fixed species difference in the relative concentrations of the cuticular hydrocarbons 2-methyl hexacosane and 5,9-pentacosadiene in Drosophila pseudoobscura and D. persimilis, and determine its genetic basis. In backcross males, this difference is due to genes on both the X and second chromosomes, while the other two major chromosomes have no effect. In backcross females, only the second chromosome has a significant effect on hydrocarbon phenotype, but dominant genes on the X chromosome could also be involved. These results differ in two respects from previous studies of Drosophila cuticular hydrocarbons: strong epistasis is observed between the chromosomes that produce the hydrocarbon difference in males, and the difference is apparently unrelated to the strong sexual isolation observed between these species.

PMID:
8940900
DOI:
10.1017/s0016672300034005
[Indexed for MEDLINE]

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