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Tuesday, October 25 Lecture

Tuesday, October 25 Lecture - Understanding Scientific...

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Understanding Scientific Theories §2.1-2.12
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Tasks Introductions Syllabus Resources on Oncourse Why understand scientific reasoning? (§1.1-1.3) The Double Helix – A Case Study (§2.1) Models & Theories (§2.2- 2.3)
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Guiding Questions What do scientists do that distinguishes them from other professionals? Explore the world Do experiments and observations Construct models And try to make them “fit” the real world Convince other scientists (peer review) Spread the word How do scientists find a problem?
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The Double Helix: A Case Study In 1951 DNA was thought to consist of polynucleotides: Sugar molecule (deoxyribose) Phosphate molecule Base: Purines: Adenine and Guanine Pyramidines
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The Double Helix: A Case Study Linus Pauling at California Institute of Technology Maurice Wilkins & Rosalind Franklin (x- ray crystallographers) at King’s College London James Watson, and Francis Crick at the Cavendish Laboratory, Cambridge University The race to the discovery of the structure…
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