BIO120H1 Lecture Notes - Lecture 10: Willi Hennig, Binomial Nomenclature, Phenetics
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BIO120H1 Full Course Notes
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The branch of science concerned with classification, especially of organisms; systematics. Classifying species on the basis of their phylogenetic relationships. Phylogenetic trees provide a depiction of the evolutionary relationships among groups or organisms. Important to appreciate they are an hypothesis about evolutionary history. A single ancestor gave rise to all species in that taxon and no species any other taxon. A taxon whose members are derived from two or more ancestral forms not common to a members. A trait that differs from the ancestral trait in a lineage to all. Similarity of traits as a result of convergent evolution. The evolution of structures that resemble in another and perform similar functional roles to the shared ecology of unrelated organisms. Independent evolutionary radiations in two lakes oles due. The similarity in form indicates convergence in feeding strategies. The relevance of molecular biology all life is related through branching descent. Common genetic code is evidence that all life is related.
