Chpts_31_32 - Chapter 31: Diversity of Life on Earth The...

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Chapter 31: Diversity of Life on Earth The theme of this chapter focuses on the Diversity of Animal Life and the new molecular techniques that are used to corroborate or redefine the traditional phylogenetic Tree of Life. Outline: Page 617 Major questions/issues: What is an “animal?” Do animals possess an “alternation of generations” like plants and fungi? What is the difference between an “invertebrate” and a “vertebrate” animal? What is a “chordate” and can there be invertebrate and vertebrate chordates? Compare and contrast the Parazoa and the Eumetazoa. Compare and contrast different forms of symmetry. What is a body cavity and how are the different types distinguished? What is the difference between a “protostome” and a deuterostome?” With the advent of molecular techniques, old ideas of phylogeny are being revisited. This causes consternation among many biologists. For example, How many origins are proposed for the metazoans? What is the significance of the “Cambrian Explosion?”
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This note was uploaded on 03/31/2008 for the course BIOL 1106 taught by Professor Georgesimmons during the Spring '08 term at Virginia Tech.

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Chpts_31_32 - Chapter 31: Diversity of Life on Earth The...

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