Outgroups:
 Anc2: ['chimpanzee.mPanTro3', 'human.rCRS577']
 Anc5: ['human.rCRS577', 'gorilla.mGorGor1']
 Anc4: ['gorilla.mGorGor1', 'Anc2']
 Anc3: ['Anc2', 'siamang.mSymSyn1']
 Anc1: ['siamang.mSymSyn1']