Phylogenetic reconstruction


know leaves, infer interior nodes
similarity:
                parallel evolution or common ancestor?


old: morphology
observable similarities


new: molecular
DNA sequences - nucleotides
protein sequences - amino acids


[research.amnh.org/programs/genomelab]


[gwis2.circ.gwu.edu/~atkins]

horse: ...CCTGAACCG...
tapir: ...ACTCTACCG...
rhino: ...GCTCTACCG...


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