Competitive Phylogenetics: A Laboratory Exercise

Autor/in	McCabe, Declan J.
Titel	Competitive Phylogenetics: A Laboratory Exercise
Quelle	In: American Biology Teacher, 76 (2014) 2, S.127-131 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0002-7685
DOI	10.1525/abt.2014.76.2.10
Schlagwörter	Science Activities; Science Laboratories; Biology; Evolution; College Science; Secondary School Science; Undergraduate Students; High School Students; Visual Aids; Computer Software; Computer Uses in Education; Competition; Genetics; Hypothesis Testing + Suchen Sie Ihr Suchwort? Biologie; High school; High schools; Student; Students; Oberschule; Schüler; Schülerin; Studentin; Anschauungsmaterial; Computernutzung; Wettkampf; Humangenetik; Hypothesenprüfung; Hypothesentest
Abstract	This exercise demonstrates the principle of parsimony in constructing cladograms. Although it is designed using mammalian cranial characters, the activity could be adapted for characters from any group of organisms. Students score categorical traits on skulls and record the data in a spreadsheet. Using the Mesquite software package, students generate arbitrary cladograms and measure tree length. They then move taxa around to reduce tree length. The exercise can become competitive when students report out on tree lengths and try to achieve shorter trees than their peers. The resulting cladograms can be compared with a published mammalian phylogeny. The exercise illustrates phylogenetics, the principle of parsimony, and hypothesis testing using morphological data. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10