Retrieving "Paraphyletic" from the archives

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1. Taxonomy

   Linked via "paraphyletic"

   Modern taxonomy places significant emphasis on phylogeny-—the evolutionary history of a group. Cladistics, the method used to reconstruct these relationships, groups organisms based on shared derived characters, known as synapomorphies.
   The goal of cladistic taxonomy is to produce monophyletic groups (clades), which consist of an ancestor and all of its descendants. Groups that include an ancestor but exclude some descendants (paraphyletic) or groups that shar…