BIOL 204 Lecture 9 Outline - Prokaryote Biology.docx

BIOL 204 Lecture 9 Outline - Prokaryote Biology.docx - BIOL...

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BIOL 204 – Principles of Organismal Biology Lecture Outline 9 – Prokaryote Biology Learning Objectives: Differentiate between monophyletic and paraphyletic groups Define and identify a synapomorphy Distinguish between prokaryotes based on shape ( cocci , bacilli , spiral ) What is an exaptation ? What does it mean to be gram+ or gram- ? Discuss prokaryote metabolism ( aerobic vs. anaerobic ; chemotroph vs. phototroph ; autotroph vs. heterotroph ) Discuss symbiosis and ecological roles of prokaryotes I. Phylogenetic Systematics a. Cladogram – branching diagram of ancestor-descendant relationships b. Clade – natural taxon based on common ancestry c. Sister taxa – descendants of a recent common ancestor d. Types of groups: i. Paraphyletic Group – group consisting of an ancestor and some, but not all, of its descendants ii. Monophyletic Group – group consisting of an ancestor and ALL of its descendants e. Synapomorphy – shared (2 or more taxa) derived character II. Three clades of life – Domains. Eukaryotes, Bacteria, & Archaea
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  • Spring '11
  • Hedin,Berta
  • Biology

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