BIOL 1202 : EXAM IV SI REVIEW ANSWERS
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In one sentence, describe the difference between phylogeny and taxonomy. Phylogeny is the evolutionary history of a species (molecular/dna sequencing--newest approach) and taxonomy is the older approach of classification based on characteristics. Phylogeny is the most useful for classifying bacteria. Which of the following displays the correct binomial nomenclature for the wolf: canus lupis, canus lupis, canus lupis, canus lupis. Fill in all of the following for the above organism. What does each branch point (node) represent? speciation/divergence of new species. What does the line leading to the node represent? lineages. You have the dna from two different organisms, and the dna looks similar at multiple loci. The two different organisms also display very similar morphologies. Analogous characteristics and similar molecular sequences (both are homoplasies similarities that are not due to common ancestor). Shared ancestral characteristic. (these are homologous structures--how cladograms are made) Backbone in mammals shared ancestral characteristic because the ancestor has the trait.
