Building a Twig Phylogeny

Autor/in	Flinn, Kathryn M.
Titel	Building a Twig Phylogeny
Quelle	In: American Biology Teacher, 77 (2015) 2, S.141-144 (4 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0002-7685
Schlagwörter	Leitfaden; Unterricht; Lehrer; Class Activities; Science Activities; Teaching Methods; Educational Strategies; Plants (Botany); Genetics; Evolution + Suchen Sie Ihr Suchwort? Lesson concept; Instruction; Unterrichtsentwurf; Unterrichtsprozess; Teacher; Teachers; Lehrerin; Lehrende; Teaching method; Lehrmethode; Unterrichtsmethode; Lehrstrategie; Pflanze; Humangenetik
Abstract	In this classroom activity, students build a phylogeny for woody plant species based on the morphology of their twigs. Using any available twigs, students can practice the process of cladistics to test evolutionary hypotheses for real organisms. They identify homologous characters, determine polarity through outgroup comparison, and construct a parsimonious tree based on synapomorphies (shared derived characters). This activity efficiently demonstrates many systematics concepts, including homology, homoplasy (convergence and reversal), polarity, synapomorphy, symplesiomorphy, autapomorphy, polytomy, and parsimony. It also engages students in inquiry, promotes student collaboration, raises awareness of plant structure, and exposes students to the diversity of common local trees. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01