Scientific Method with DNA
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Wetenschappelijke Methode Stappen
Door Oliver Smith
De wetenschappelijke methode is een constant proces: één ontdekking kan leiden tot veel meer vragen die bij onderzoek tot meer antwoorden kunnen leiden. Naast een samenvatting van de belangrijkste stappen van de wetenschappelijke methode, worden er activiteiten voorgesteld om uw leerlingen te laten nadenken over wetenschap in de echte wereld.
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Storyboard Beschrijving
scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape
Storyboard Tekst
- 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/)
Afbeelding Attributies
- X-ray ensemble - genomebiology - (Licentie Attribution )
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