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C two plant species have wind dispersed pollen that

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Unformatted text preview: is, but only the latter increases biodiversity. proceeds at a uniform tempo across all taxa. 4 BIOL 1001M Midterm II KEY Kelly W2013 vA 14. From the phylogenetic tree above, which of the following taxonomic groupings is paraphyletic? A. B. C. D. E. X, Y and Z V and W U and V V, W, X, Y and Z Y and Z 15. Natural selection for traits that keep distinct populations from reproducing with each other is called reinforcement. When will natural selection favour such traits? A. B. C. D. When populations would otherwise fuse over time. When hybrids have lower fitness than either parent population. When prezygotic isolating mechanisms are in place. When one population could overwhelm the other. 16. A common ancestor for both species C and B, in the diagram at right, could be at position number A. B. C. D. E. 1 2 3 4 5 17. You are given a box of preserved locusts (insects) of various species that are new to science and have not been described. Your assignment is to separate them into species. There is no accompanying information as to where or when t...
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