title: A topological treatment of recombination and topoisomerases.
mesh_terms: D004264:DNA Topoisomerases, Type I; D004250:DNA Topoisomerases, Type II; D004270:DNA, Circular; D008040:Genetic Linkage; D008957:Models, Genetic; D008958:Models, Molecular; D011995:Recombination, Genetic
chemical_list: D004270:DNA, Circular; D004264:DNA Topoisomerases, Type I; D004250:DNA Topoisomerases, Type II