Summary
The presumed duplicational nature of white ivory (wi) of Drosophila melanogaster was tested by crossing over. It was observed that wi neither reduces nor enhances recombination in the intervals marked by subsites 1 and 3 and 4 and 5 of the white locus. The duplicational nature of this mutant site is questioned.
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References
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Hazra, S., Banerjee, J. & Sen, S. Genetic nature of white ivory (wi) in the white locus of Drosophila melanogaster as resolved through crossing-over tests. Heredity 40, 299–303 (1978). https://doi.org/10.1038/hdy.1978.29
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DOI: https://doi.org/10.1038/hdy.1978.29