Neighbor-Joining/UPGMA method version 3.6b 6 Populations UPGMA method Negative branch lengths allowed +------------------mutA +-----------------3 ! ! +--------------mutB ! +---1 --5 +--------------mutC ! ! +-------------------------mutD +----------4 ! +----------------mutE +--------2 +----------------mutF From To Length Height ---- -- ------ ------ 5 3 0.59146 0.59146 3 mutA 0.60770 1.19916 3 1 0.10218 0.69364 1 mutB 0.50552 1.19916 1 mutC 0.50552 1.19916 5 4 0.35246 0.35246 4 mutD 0.84670 1.19916 4 2 0.28573 0.63819 2 mutE 0.56097 1.19916 2 mutF 0.56097 1.19916