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Taxonomy Ch. 18.2 (p.342-346). Phylogeny = evolutionary history of an organism; Classification is based on evolutionary relationships Phylogenetic tree = a family tree that shows evolutionary relationships Fossil record Morphology (body parts and shapes) DNA, RNA.
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TaxonomyCh. 18.2 (p.342-346) Phylogeny = evolutionary history of an organism; • Classification is based on evolutionary relationships Phylogenetic tree = a family tree that shows evolutionary relationships • Fossil record • Morphology (body parts and shapes) • DNA, RNA Have you heard the term “morph” before? Relate it to the scientific definition.
TaxonomyCh. 18.2 (p.342-346) What does a branch point represent between 2 evolutionary lines?
TaxonomyCh. 18.2 (p.342-346) Is the wolf more closely related to the badgeror the leopard?
TaxonomyCh. 18.2 (p.342-346) Is a tuna fish more closely related to a shark or a human?
TaxonomyCh. 18.2 (p.342-346) Is a tuna fish more closely related to a shark or a human? A human. It does not about distance it is about common ancestor.
TaxonomyCh. 18.2 (p.342-346) Cladogram = phylogenetic tree that branches at common shared characteristics. • Implies a common ancestor • Clade = group with shared characteristic • Birds have… • Mammals have… • Insects have…