Ch 15 – Ch 16

Ch 15 – Ch 16 - Ch 15 Ch 16 Phylogeny and...

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Ch 15 – Ch 16 01/02/2008 10:03:00 Phylogeny and Systematics: Chapter 15 Introduction Topic #1 Intro Phylogeny is the study of the evolutionary relationships of a species o “tribe” – “origin” o Cladogram is diagrams of hypothesis about phylogeny Systematics is classification of species according to their phylogeny o Similar to taxonomy but based on phylogeny Topic #2 Reconstructing Phylogeny Fossils o Sedimentary rocks o Hard Parts Bones Trees Tusks o Sap Caskets Geologic Time o Relative dating X is older than y Layers of sediment o Absolute dating Organism dies carbon stops accumulation
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Normal C12 stays constant but the radioactive isotope(C14)  decays Examine ratio o Absolute and relative dating for better picture o Time divided into Eras based on major events – not set time scales Pg 298 of text has important chart
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This note was uploaded on 10/21/2008 for the course BIOL 1301 taught by Professor Harbison during the Spring '08 term at University of Texas-Tyler.

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Ch 15 – Ch 16 - Ch 15 Ch 16 Phylogeny and...

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