The fasta-formatted sequence files contain the gene alignments used in the 
computation of genetic distances. The last row indicates whether the column was 
discarded in the filtering (A) or retained for the analysis (G). The text files 
give the start positions of the genes.

The different subsets are:
 - 12species: hybridizing and other species
 - 8species: hybridizing species
 - seals-cats: seals and big cats
 - seals-equines: seals and equines
 - seals-humans: seals and humans