title: The preparation of congenic strains of Tetrahymena.
mesh_terms: D000483:Alleles; D003433:Crosses, Genetic; D004247:DNA / Q000032:analysis; D004330:Drosophila; D004950:Esterases / Q000032:analysis; D008040:Genetic Linkage; D005838:Genotype; D006579:Heterozygote; D006720:Homozygote; D007527:Isoenzymes / Q000032:analysis; D008967:Molecular Biology; D010641:Phenotype; D010744:Phosphoric Monoester Hydrolases / Q000032:analysis; D013768:Tetrahymena / Q000032:analysis / Q000201:enzymology*
chemical_list: D007527:Isoenzymes; D004247:DNA; D004950:Esterases; D010744:Phosphoric Monoester Hydrolases