Besides the axoneme and basal body, relatively constant in morphology, other internal structures of the flagellar apparatus are the transition zone ( where the axoneme and basal body meet ) and the root system ( microtubular or fibrilar structures which extends from the basal bodies into the cytoplasm ), more variable and useful as indicators of phylogenetic relationships of eukaryotes.
22.
Besides the axoneme and basal body, relatively constant in morphology, other internal structures of the flagellar apparatus are the transition zone ( where the axoneme and basal body meet ) and the root system ( microtubular or fibrilar structures which extends from the basal bodies into the cytoplasm ), more variable and useful as indicators of phylogenetic relationships of eukaryotes.
