Fig. 3From: Molecular genetic diversity and differentiation of Nile tilapia (Oreochromis niloticus, L. 1758) in East African natural and stocked populationsGenetic structure based on unrooted network tree illustrating population relationships based on genetic distance. a represents a network tree for all the populations and b for only the Ugandan populations. Dotted oval and rectangular shapes depict closely related genetic groupsBack to article page