Chromosomes and recombination.
D000818:Animals; D001203:Ascomycota; D001230:Aspergillus; D002842:Chromatids; D002875:Chromosomes; D003433:Crosses, Genetic; D003434:Crossing Over, Genetic; D004247:DNA; D004260:DNA Repair; D004331:Drosophila melanogaster; D004926:Escherichia coli; D006579:Heterozygote; D006639:Histidine / Q000378:metabolism; D008540:Meiosis; D008954:Models, Biological; D009492:Neurospora crassa; D009693:Nucleic Acid Hybridization; D010944:Plants; D011995:Recombination, Genetic; D013172:Spores, Fungal
D006639:Histidine; D004247:DNA