Figure 4

The format of a MIDAS input file. Data are raw genotypes in a tab-delimited text file. Row 1 contains marker names, row 2 contains positions. Markers should be sorted in position order for clarity. Alleles should be delimited by an underscore ("_"), and can be any valid letter or number. Where numbers are used, ensure that the same number of digits are used for all alleles (eg 094, 098, 102) to preserve size order in the alphanumeric sort. There must be no more than one blank line at the end of the data and all null values must be coded as "?_?".