Phylogeny_quiz_Sp'10.pdf

Phylogeny_quiz_Sp'10.pdf - (2 pts.) 2a) In terms of...

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Name ___________________________________ SPRING '10 Lab section # ____ _ In accordance with the Community Standard, I pledge that the answers given on this assignment represent only my own, individual effort. --------------------------------------------------------------- Signature Pre-lab quiz for week of Mar. 15 “Phylogenetics Systematics of Plants” Answer the questions below in at most 1-2 sentences each in your own word s. Do not quote the Lab Manual, your text, or PowerPoints from lecture. 1a) What kind of information is represented by the branching pattern of a phylogenetic tree? (1 pt.) b) Phylogenetic analysis is now a central part of modern biology. Briefly list two (2) ways a biologist could make use of the information contained in a phylogenetic tree.
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Unformatted text preview: (2 pts.) 2a) In terms of constructing a phylogenetic tree, explain why it is necessary to determine which character state of a given trait is "primitive" (= "ancestral"). (1 pt.) b) For what purpose will you be using characteristics of mosses to construct a phylogenetic tree of plants in lab? (1 pt.) 3) What is the significance of shared, derived characters in constructing or interpreting a phylogenetic tree? (1 pt.) 4a) In the context of a phylogenetic tree, what does it mean to say that two species are monophyletic and thus form a clade ? (1 pt.) b) Three species share the same most recent common ancestor. How many clades of two or more of these species are possible? (1 pt.) Biology 25L...
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