Rooting using an outgroup
unrooted
tree
archaea
archaea
archaea
eukaryote
eukaryote
eukaryote
eukaryote
rooted
by outgroup
bacteria outgroup
root
eukaryote
eukaryote
eukaryote
eukaryote
archaea
archaea
archaea
Monophyletic
group
Monophyletic
group