BIOL 1F90 Lecture 16: BIOL 1F90 lecture 16 winter 2016
25 Feb 2016
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Explain why a classi cation system containing class reptilia and class aves is not valid. Identify cladogenetic and/or anagenetic events on a phylogenetic tree. Explain why only shared, derived characters indicate close evolutionary relationship. Explain how a phylogenetic tree can indicate the timing of species diversi cation. De ne what is meant by parsimony and know how the principle of parsimony is used in phylogenetic reconstruction. Be able to use proper binomial nomenclature. Science of describing, naming, and classifying living and extinct organisms and viruses. Study of biological diversity and the evolutionary relationship among organisms both extinct and modern. Taxonomic groups are now based on hypotheses regarding evolutionary relationships derived from systematics. Each group at any level is called a taxon. All of life belongs to one of three domains. All life originated from primordial prokaryotic cells between 4. 0 and 3. 5 bya. Soon after, two prokaryotic domains, bacteria and archaea, diverged. Rules for naming established and regulated international associations.
