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Tree of life

Campbell Biology 9th Ch. 26 Powerpoint

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Campbell Biology

Phylogeny and the Tree of Life Chapter 26 Overview: Investigating the Tree of Life Legless lizards have evolved independently in several different groups ? 2011 Pearson Education, Inc. Figure 26.1 Phylogeny is the evolutionary history of a species or group of related species The discipline of systematics classifies organisms and determines their evolutionary relationships Systematists use fossil, molecular, and genetic data to infer evolutionary relationships ? 2011 Pearson Education, Inc. Concept 26.1: Phylogenies show evolutionary relationships Taxonomy is the ordered division and naming of organisms ? 2011 Pearson Education, Inc. Binomial Nomenclature In the 18th century, Carolus Linnaeus published a system of taxonomy based on resemblances

Chapter 26: Phylogeny and the Tree of Life (9th Edition)

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CAMPBELL BIOLOGY, AP* 9th EDITION Chapter 26: Phylogeny and the Tree of Life Biologists trace phylogeny - evolutionary history of a species or group of species To construct phylogenies, biologists use systematics - a discipline focused on classifying organisms and determining their evolutionary relationships. 26.1 The scientific discipline of taxonomy is how organisms are named and classified Common names don?t necessarily reflect the organism they signify (ex: silverfish is a bug and jellyfish is a cnidarian). So, we use Latin scientific names. They come in binomial, or two-part, format. Part 1 - the genus (pl. genera) of the organism Part 2 - ?specific epithet?, which is unique for every species in the genus.
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