Study+Guide2011+Lec7-9 - Describe some of the major...

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The Tree of Life, Rooting the Tree of Life, Bacterial and Archaeal Diversity, Lateral Gene Transfer Study Guide (Lectures 7-9) Outline of some of the major concepts and topics you need to know about. This is NOT an exhaustive list but merely a guide to most of the major concepts. Most of this material was covered in Lectures 7-9. Number of origins of life and how many trees of life are there? Universal homologies o Examples o What they mean for the tree of life o Why these cannot be used to infer branching patterns rRNA and the tree of life o How a universal gene can be used to infer phylogeny o Three domain tree of life o Rooted tree of life o Differences and similarities between each of the major domains o Features unique to and widespread in each group Be able to give examples of these Inferring the ancestry of major features o Bacteria and archaea vs eukaryotes
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Unformatted text preview: Describe some of the major distinctions Understand examples from class and book • Rooting the tree of life o Why the rRNA tree of life cannot be rooted by analysis of modern organisms o Rooting the tree using duplicated genes • Bacteria and archaea o Diversity of form Give some examples o Diversity of function Give some examples o Trophy/Nutrition o Phylogenetic Diversity Major groups of bacteria and archaea Know some features of each group o Lateral gene transfer Understand three described mechanisms (more detail in Ch 13.3) Understand implications and how to draw it on a tree • What is metagenomics? o The challenge posed by organisms that cannot be cultured o How would one go about searching for a fourth domain of life? What is the Human Microbiome project? Do various parts of the human body have similar profiles of bacterial species?...
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Study+Guide2011+Lec7-9 - Describe some of the major...

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