Scientific Method with DNA

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Scientific Method with DNA
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Metodo Scientifico Passi

Di Oliver Smith

Il metodo scientifico è un processo costante: una scoperta può portare a molte più domande che, se indagate, possono portare a più risposte. Oltre a una sintesi dei passaggi chiave del metodo scientifico, vengono suggerite attività per coinvolgere i tuoi studenti a pensare alla scienza nel mondo reale.




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Storyboard Descrizione

scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape

Testo Storyboard

  • Part of the Scientific Method
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  • Example
  • DNA has four bases.
  • Question
  • Avery, MacLeod and McCarty discovered that DNA was likely to carry the genetic information. They did not, however, know the shape of the DNA molecule.
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  • Hypothesis
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  • Crick and Watson hypothesized that DNA had a helical (spiral) shape.
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  • I think __________ will happen.
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  • Prediction
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  • If the form of DNA were helical, then its X-ray diffraction pattern would be X-shaped.
  • I carried out an experiment using X-rays to look at the structure of DNA. Using this image I made, we can work out what the structure is.
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  • Experiment
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  • Rosalind Franklin was carrying out research at Kings College, London. She looked at the structure of DNA using X-ray diffraction.
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  • Analysis
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  • The images were shared with Watson and Crick who analyzed the images and discovered that the pattern matched their hypothesis and prediction.
  • Image Attributions:X-ray ensemble (https://www.flickr.com/photos/99249556@N03/9344158296/) - genomebiology - License: Attribution (http://creativecommons.org/licenses/by/2.0/)

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