X-ray quality and the induction of meiotic recombination in Drosophila melanogaster males.
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.
D000818:Animals; D002875:Chromosomes / Q000528:radiation effects*; D004331:Drosophila melanogaster / Q000235:genetics* / Q000502:physiology / Q000528:radiation effects; D008297:Male; D008540:Meiosis; D011679:Pupa / Q000528:radiation effects; D011995:Recombination, Genetic; D013094:Spermatozoa / Q000528:radiation effects; D014965:X-Rays