Split the alignment in two (following the tree) if the subtrees are not mutually aligned (i.e. if the root node has no sequence)
Split the alignment in two (following the tree) if the subtrees are not mutually aligned (i.e. if the root node has no sequence)

Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara