lecture 06 - PHYLOGENETICS I ORDERING THE DIVERSITY OF LIFE...

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PHYLOGENETICS I ORDERING THE DIVERSITY OF LIFE Ch.2, Ignore Box 2B LOOK AT PHYLOGENY WORKSHEET AND CLASS HANDOUT; BE ABLE TO DRAW A TABLE AND TREE!! Systematics – scientific study of the diversity of organisms Goals of systematics o Classification and identification of organisms (variation is not continuous; it seems to come in discrete units, e.g. species) o Nomenclature (naming taxa) o Phylogeny (determining evolutionary relationships and forming extended pedigrees that reflect descent with modification) The nature of variation o Hierarchy in patterns of variation caused by descent with modification o Characters and character states… Character – feature of an organism Character state – particular manifestation of a character Lead to intuitive clustering based on morphology DNA sequence data is another very important character to refer to o Cause of similarity – either relatedness or just similarity; more similar does NOT necessarily mean more related
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This note was uploaded on 03/31/2008 for the course BIOEE 2780 taught by Professor Geber during the Fall '07 term at Cornell University (Engineering School).

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lecture 06 - PHYLOGENETICS I ORDERING THE DIVERSITY OF LIFE...

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