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| Description: When the outgroups share a common trait with two of the members of the polytomy, we get no information from that trait to help us resolve the polytomy. The observed pattern requires only one evolutionary event, depicted at the red arrow, regardless of how the polytomy is resolved. 01 = out- group 1; 02 = outgroup 2. Picture Stats: Views: 1262 Filesize: 111.38kB Height: 601 Width: 1350 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=5307 |