Scientific Method with DNA
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Шаги Научного Метода
Оливер Смит
Научный метод — это постоянный процесс: одно открытие может привести к множеству новых вопросов, которые при исследовании могут привести к большему количеству ответов. В дополнение к краткому изложению ключевых шагов научного метода предлагаются действия, которые помогут вашим ученикам вовлечься в размышления о науке в реальном мире.
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Описание Раскадровки
scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape
Текст Раскадровки
- 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/)
Image Attributions
- X-ray ensemble - genomebiology - (Лицензия Attribution )
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