title: Modification of recombination frequency in Drosophila. II. The polygenic control of crossing over.
mesh_terms: D000818:Animals; D002875:Chromosomes; D003433:Crosses, Genetic; D003434:Crossing Over, Genetic; D004331:Drosophila melanogaster; D005260:Female; D005796:Genes; D006570:Heterochromatin; D008297:Male; D011995:Recombination, Genetic; D012641:Selection, Genetic
chemical_list: D006570:Heterochromatin