Place the phenotypes (triangle, square, and circle) on the phylogeny above according to the principle of parsimony. (3 points)
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In this phylogenetic tree, we need to place the three phenotypes (triangle, square, and circle) on the branches such that the total number of evolutionary changes is minimized. Show more…
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Use the data matrix below to perform a phylogenetic analysis using maximum parsimony. Show all of your work. Make sure to mark all synapomorphies and autapomorphies on each of your trees. Below each phylogeny, provide the number of character state changes and then clearly indicate which is the most parsimonious phylogenetic tree. Write one sentence that indicates why this is the most parsimonious tree. 6 pts. Characters: 0 = Absent. 1 = Present. Species 1 2 3 4 5 6 7 Outgroup 0 0 0 0 0 0 0 A 1 1 1 1 1 0 1 B 1 1 1 0 1 0 0 C 1 0 0 1 0 1 1
Sri K.
Assume that this cladogram depicts the correct branching pattern for the five species. The states for eight characters are shown for each species. Assume unprimed states are plesiomorphic, that primed ones are apomorphic, and that double-primed states can evolve either from the plesiomorphic or a single-primed state. Assuming parsimony, infer (1) the branch (internodal segment) on the tree where each apomorphic state evolved and label it with a tick mark, and (2) infer the set of character states defining each labeled node (i.e., I, II, & III) and the common ancestor. In this instance, the common ancestor for the cladogram need not show the plesiomorphic state for all characters.
Supreeta N.
You are using maximum parsimony to determine the relationships among six species (A, B, C, D, E, and F). You examine different traits for the six species and an outgroup. Below you will find the data matrix: Species (a) Which traits are not useful for distinguishing relationships among species B, C, D, E, and F? (5 points) (b) Given below are two possible tree topologies for these species. Based on the principle of maximum parsimony, circle the tree that most likely represents the true relationships among these species. Please show your work (i.e. map the traits with tick marks onto each tree. Beside each tick mark, give the number of the trait). Please include all traits, even those you determined were not useful in part (35 pts).
Adi S.
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