Common Threads that Connect All Life

Common Threads that Connect All Life - * There is no one...

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Common Threads that Connect All Life   * Life is diverse but there are common themes that all living things exhibit.   (1) Evolution is the core theme of biology.   Evolution - the process by which life on earth has changed over time.   Natural Selection - the theory proposed by Charles Darwin to explain how evolution has  occurred.   1859 - On the Origin of Species by Natural Selection   * Natural selection emphasizes the variation that exists within and between species, the  competition that occurs because of limited resources, and differential rates of survival  and reproduction which result from this competition.   * The fossil record documents the evolution of species.   (2) Science is an active process for understanding life.   Scientific method - processes by which scientists conduct investigations
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Unformatted text preview: * There is no one "scientific method". Scientists actually use a variety of techniques to learn more about the world around us. However, many experimental studies would recognize the following steps: A. Statement of the problem B. Hypothesis formation - An "educated guess" C. Experiment 1. experimental group 2. control group D. Collection of data E. Analysis of results F. Conclusion - Reject or accept the hypothesis G. Communication of findings * Considerations pertaining to the scientific method: A. Hypothesis must be testable B. Sample size must be sufficiently large C. Experiment must have proper controls D. Experiment must be reproducible...
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This note was uploaded on 11/18/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.

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Common Threads that Connect All Life - * There is no one...

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