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For this ess

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For this essay examination, answer the following questions in one to two short paragraphs each.
1. Compare and contrast directional selection and disruptiveselection, and provide an example of each.
2. Many pathogenic bacteria species are becoming resistant toantibiotics. Explain how such adaptations can develop throughthe process of natural selection. (Hint: Relate this example tothe conditions that are necessary for natural selection to occur.)
3. How do biologists define life, and what were of life?
4. Which traits are shared by all eukaryotic cells, and what are thethree major lines of evidence that mitochondria arose fromendosymbiosis with proteobacteria?

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