BIOL108 Lecture Notes - Lecture 7: Phylogenetic Tree, Polytomy, Organism

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Week 3. 1: polyphyletic group (poly = many): known taxa get lumped together into a higher. Taxon (group) even though they do not share recent ancestors: all descendants but not all ancestors, more than one common ancestor (possessing different ancestors, lacking common ancestor that unites members in group. 2. 1 arrange these different levels of biological organization in order. 2. 4 which one of the following statements is true: humans are more evolved than bacteria, molluscs found in the ocean today are more advanced species that those that existed. 100,000 years ago: eventually, given enough time, all species will converge into one perfect organism, species are only as well adapted to their environment as they need to be in order to survive and reproduce. 2. 5 fossil evidence indicates that some dinosaurs had feathers. 2. 6 three living species x, y, and z share a common ancestor t, as do extinct species u and v.

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