Chromosomal inversions and genetic control revisited: the use of inversions in sexing systems for higher Diptera
✍ Scribed by G. G. Foster
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 442 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0040-5752
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✦ Synopsis
Genetic sexing systems based on sex-linked translocations and deleterious mutations are subject to breakdown from genetic recombination in males. Including inversions in these strains may provide a solution to this problem, by ensuring selective elimination of recombinant products. Inversions could be used either in coupling to or in repulsion to the translocation. The latter system, requiring homozygous-viable inversions, would be more difficult to construct, but would offer several advantages not available with coupled translocation/inversion systems. A system proposed for the blowfly Lucilia cuprina is outlined, which combines homozygous-viable pericentric inversions in repulsion to existing sex-linked translocations. This system should both stabilize the genetic sexing system and increase the suppressive potential of such strains.