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Table 4 Unconventional features observed in phylogenetic trees constructed by students

From: Student construction of phylogenetic trees in an introductory biology course

Feature Group unit exam (n = 23) Individual final exam (n = 77) Group final exam (n = 22)
Variable orientation 7 (30 %) 15 (19 %) 4 (18 %)
Taxa on branches 3 (13 %) 8 (10 %) 2 (9 %)
Arrowhead branches 1 (4 %) 6 (8 %) 0 (0 %)
Displaced outgroup 2 (9 %) 5 (6 %) 1 (5 %)