Asymmetrical pairings of transposons in and proximal to the white locus of Drosophila account for four classes of regularly occurring exchange products.

@article{Davis1987AsymmetricalPO,
  title={Asymmetrical pairings of transposons in and proximal to the white locus of Drosophila account for four classes of regularly occurring exchange products.},
  author={Patricia S. Davis and Mei Shen and Burke H. Judd},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1987},
  volume={84 1},
  pages={174-8}
}
An explanation for the origins of four classes of regularly occurring duplication and deficiency chromosomes is provided through examination of their molecular structures. The duplications and deficiencies occur as the reciprocal products of crossing-over, following two different patterns of asymmetrical synapsis between transposons positioned in and proximal to the white locus of Drosophila melanogaster. Three copies of the retrovirus-like transposon roo are involved in the exchanges. Evidence… CONTINUE READING

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