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Keywords: polarity
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Journal Articles
The American Biology Teacher (2015) 77 (2): 141–144.
Published: 01 February 2015
..., determine polarity through outgroup comparison, and construct a parsimonious tree based on synapomorphies (shared derived characters). This activity efficiently demonstrates many systematics concepts, including homology, homoplasy (convergence and reversal), polarity, synapomorphy, symplesiomorphy...