Fig. 1

Tree phylogeny for 23 species of yeast. We test each of the 12 selected branches (marked as #4, #5, #6, #10, #114, etc.) to partition the species in the tree for rewiring events. Note that the partition numbers that are one or two digits indicates the branch includes all species up to that species number. A whole genome duplication is indicated in branch #10. Each branch partitions the set of species into two sets M (the species on that branch) and M ^⋆ (the remaining species). The 23 species are: Saccharomyces (S.) cerevisiae (1), S. paradoxus(2), S. mikatae (3), S. bayanus (4), Candida (C.) glabrata (5), S. castellii (6), Kluyveromyces (K.) waltii (7), S. kluyveri (8), K. lactis (9), Ashbya gossypii (10), Clavispora lusitaniae (11), Debaryomyces hansenii (12), C. guilliermondii (13), C. tropicalis (14), C. albicans (15), C. parapsilosis (16), Lodderomyces elongisporus (17), Yarrowia lipolytica (18), Aspergillus nidulans (19), Neurospora crassa (20), Schizosaccharomyces japonicus (21), Schizosaccharomyces octosporus (22), Schizosaccharomyces pombe (23)