Tree_of_Pasta_Activity[1]

Tree_of_Pasta_Activity[1] - The more synapomorphies two...

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Classification: Pasta’s Phylogenetic Tree Important definition: Shared derived characteristic (synapomorhy) ________________________________________________________________________________ ________________________________________________________________________________ 2. Look at the cladogram below. a) What is a shared derived characteristic for all 4 species? _____________________ b) Write 3 more shared derived characteristics on the cladogram for the top 3 species, the top 2 species, and the top species (at the ovals). True or false: The oldest organism in the above tree is the giraffe. The youngest organism in the above tree is the giraffe. Each branch point represents a hypothetical ancestor of all the taxa above it on the tree. A derived character is one that is relatively modified from its original, ancestral form.
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Unformatted text preview: The more synapomorphies two groups exhibit, the more recent their common ancestor. You can't say something is "primitive" or "derived" without comparing it to something else. You cannot correctly say that any species evolved from another species. You can say only that two species share a common ancestor. 3. Pasta Classification How to Make a Cladogram a) Fill in the 1 st column in the table below with different traits. Then, for each trait, put an X in the box if the pasta has that characteristic. PASTA Character Penne Linguine Macaroni Lasagna Colored Penne Rotini TOTAL Xs b) Using the information from your chart, draw a cladogram of the types of pasta. Write in the shared derived characteristics on the branching diagram. Which pasta is the oldest? _______________ Youngest? _____________...
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This note was uploaded on 09/23/2011 for the course SCI 240 taught by Professor Staff during the Spring '11 term at S.F. State.

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Tree_of_Pasta_Activity[1] - The more synapomorphies two...

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