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

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Noor, MA; Coyne, JA

Published Date

  • October 1996

Published In

  • Genetical Research

Volume / Issue

  • 68 / 2

Start / End Page

  • 117 - 123

PubMed ID

  • 8940900

Digital Object Identifier (DOI)

  • 10.1017/s0016672300034005


  • eng