Principles of Biology (Week 1-2)
Principles of Biology (Week 1-2) Bio 100
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This 2 page Class Notes was uploaded by Jonathan Thomas on Saturday September 17, 2016. The Class Notes belongs to Bio 100 at Brigham Young University taught by Dr. Jamie Jensen in Fall 2016. Since its upload, it has received 10 views. For similar materials see Principles of Biology in Life Sciences at Brigham Young University.
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Date Created: 09/17/16
BIO 100, Principles of Biology, Jensen Class Notes (Week 12) Steps to the Scientific Method: 1: Puzzling Observation 2: Causal Question: “Why?” 3: Hypothesis: possible explanation of your causal question 4: Design Experiment: 5: Prediction: if “x” happens, then “y” should happen 6: Conclusion: Hypothesis supported or not Three Types of Variables in Experiment: 1: Dependent: What happens as a result of the experiment 2: Independent: What you are changing 3: Control: What you keep the same Why can’t we prove anything in science: there’s always some other explanation out there. Types of Study: Correlation: Whe n two things orrelate in their effect on each other Causation: W hen one thing c auses the other Primary: Peerreviewed, firsthand written Secondary: Somebody reporting ON a primary research Anecdotal: It’s only true based on personal view. (Sometimes spurs the creation of Primary research.) Observation: You seeing a phenomenon Hypothesis: Possible explanation for an observation Theory: A “Model” of constructed hypotheses Law: Something that always holds true Homology: Share a common ancestry Analogy: Traits look the same (because of environment) but don’t share common ancestors Vestiges: Qualities we all have but are unused Coccyx (tailbone) Appendix Hair standing up on end Man’s nipples Atavism: A physical trait you shouldn’t have but somehow your genes get mutated and you get it. Third nipple Tail Evidence of Evolution : Morphology: looking at the anatomy Embryology: looking at embryos Fossils Rock structure Chromosomes: Centromere: point where chromosomes connect Telomere: The tips of the chromosomes
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