Use bias corrected recombination formula for RIL Check this box to use bias-corrected formulas for calculating recombination fractions in recombinant inbred lines. Refer to Martin and Hospital, 2006^{1}, for more information. 1 Martin OC and Hospital F. (2006). Two- and three-locus tests for linkage analysis using recombinant inbred lines. Genetics 173: 451-459.