title: Genetic characterization of rec-1, a mutant of Ustilago maydis defective in repair and recombination.
mesh_terms: D001487:Basidiomycota / Q000528:radiation effects*; D004260:DNA Repair; D004171:Diploidy; D006238:Haploidy; D008540:Meiosis; D009154:Mutation; D009604:Nitrosoguanidines / Q000494:pharmacology; D010641:Phenotype; D011995:Recombination, Genetic; D014466:Ultraviolet Rays; D014588:Ustilago / Q000528:radiation effects*
chemical_list: D009604:Nitrosoguanidines