title: On the "NPD ratio" as a test for crossover interference.
abstract: The "NPD ratio," widely used by yeast geneticists, is of limited applicability and is prone to falsely indicate significant crossover interference in a chi-square test. A simple, better chi-square test for interference in two-factor crosses is described.
authors.affiliation: Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA. fstahl@uoregon.edu
authors.forename: Franklin W
authors.initials: FW
authors.lastname: Stahl
mesh_terms: D003434:Crossing Over, Genetic / Q000235:genetics*; D016013:Likelihood Functions; D008957:Models, Genetic; D015003:Yeasts / Q000235:genetics*