Drop Alleles with frequency below: Use the text box to specify the cutoff such that the column/row corresponding to an allele with a frequency below this value is omitted from the Output Genotype Data Set / Output Annotation Data Set , respectively. You must specify a number between 0 and 0.5 . Enter 0 to keep all allele columns. This option is available only when Numeric Dominant as the Expanded Genotype Recoding method. To Specify This Option: Select Numeric Dominant as the Expanded Genotype Recoding method. Type the desired cutoff frequency in the text box.