Abstract
THE frequency of gene recombination is known to be affected by extrinsic factors or intrinsic ones such as sex. Crossing-over is completely blocked in dipteran males, including those of Drosophila melanogaster, and in silkworm females. It is a puzzling problem why sex should have such an influence on crossing-over. Lack of homology between regions of the X and Y may explain the absence of crossing-over between the sex-chromosomes of the heterogametic sex, but the absence of crossing-over in the autosomes must have a different cause.
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Reddi, O. S., and Auerbach, C., Genet. Res., 2, 63 (1961).
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REDDI, O., REDDY, G. & RAO, M. Induction of Crossing-over in Drosophila Males by Means of Ovarian Extract. Nature 208, 203 (1965). https://doi.org/10.1038/208203a0
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DOI: https://doi.org/10.1038/208203a0
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