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Chapter 26 - Chapter 26 Phylogeny and the Tree of Life...

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Chapter 26 – Phylogeny and the Tree of Life Phylogeny – the evolutionary history of a species or group of related species Systematics – an analytical approach to understanding the diversity and relationships of organisms o Morphological, biochemical, and molecular comparisons used to infer relationships I. Concept 26.1 : Phylogenies show evolutionary relationships a. Taxonomy – the ordered division of organisms into categories based on a set of characteristics used to assess similarities and differences II. Binomial nomenclature a. The two part format of the scientific name of an organism, Carolus Linnaeus b. The binomial name consists of i. The genus and species ii. These are always written in a different font (e.g. italics) iii. Genus is always capitalized; species is always lowercase 1. Homo sapiens III. Hierarchical Classification a. Linnaeus also introduced the system for grouping species in increasingly broad categories b. K eep P ipes C lean OF G a S i. Kingdom, Phylum, Class, Order, Family, Genus, Species IV.Which of the following represents the correct order of taxa, from most inclusive to least inclusive? a. Domain, kingdom, phylum, class, order, family, genus V. Concept 26.6: Phylogenies are inferred from morphological and molecular data
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VI.Morphological & Molecular Homologies a. Phylogenetic history can be inferred form similarities in homologous structures in homologous structures and genes when compared among organisms b.
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