Experimental and Theoretical Analysis of the "Sex-Ratio" Polymorphism in DROSOPHILA PSEUDOOBSCURA.

@article{Curtsinger1980ExperimentalAT,
  title={Experimental and Theoretical Analysis of the "Sex-Ratio" Polymorphism in DROSOPHILA PSEUDOOBSCURA.},
  author={James W. Curtsinger and Marcus W. Feldman},
  journal={Genetics},
  year={1980},
  volume={94 2},
  pages={445-66}
}
The Sex-ratio chromosome (SR) is a widespread, multiply inverted rearrangement of the X chromosome present in several species of Drosophila. Male carriers transmit mostly X-bearing sperm. In the absence of strong counteracting selection, SR is expected to increase rapidly to fixation, causing extinction. The present study incorporates a selection-components analysis of SR in laboratory populations, using the closely linked Esterase-5 locus as a marker. Estimated fitnesses show directional… CONTINUE READING

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