title: Mitotic recombination in the heterochromatin of the sex chromosomes of Drosophila melanogaster.
abstract: The frequency of spontaneous and X-ray-induced mitotic recombination involving the Y chromosome has been studied in individuals with a marked Y chromosome arm and different XY compound chromosomes. The genotypes used include X chromosomes with different amounts of X heterochromatin and either or both arms of the Y chromosome attached to either side of the centromere. Individuals with two Y chromosomes have also been studied. The results show that the bulk of mitotic recombination takes place between homologous regions.
mesh_terms: D000818:Animals; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005816:Genetic Complementation Test; D006570:Heterochromatin; D008297:Male; D008938:Mitosis; D009154:Mutation; D011995:Recombination, Genetic; D012730:Sex Chromosomes; D014960:X Chromosome; D014998:Y Chromosome
chemical_list: D006570:Heterochromatin