X-ray quality and the induction of meiotic recombination in Drosophila melanogaster males. |
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Authors: | A W van der Wielen |
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Affiliation: | Department of Radiation Genetics and Chemical Mutagenesis, University of Leiden, and J.A. Cohen Institute, Interuniversity Institute for Radiopathology and Radiation Protection, Leiden, The Netherlands |
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Abstract: | This paper reports a set of experiments designed to determine whether the radiation-quality effect, reported for the induction of somatic recombination, could be also demonstrated for meiotic recombination. Males heterozygous for markers on the 2nd chromosome were given an exposure of 600 R with either 55 kV or 100 kV X-irradiation. Treated spermatocytes were sampled by irradiating young pupae and then taking the first day sperm from the emergent adult males. When 2-h old pupae were irradiated there were significantly fewer centric and more non-centric recombinants, than when 4--6 h old pupae were irradiated. No radiation-quality effect was found. |
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