Scientific Method with DNA
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Pasos del Método Científico
Por Oliver Smith
El método científico es un proceso constante: un descubrimiento puede conducir a muchas más preguntas que, cuando se investigan, pueden conducir a más respuestas. Además de un resumen de los pasos clave del método científico, se sugieren actividades para que los estudiantes participen en el pensamiento sobre la ciencia en el mundo real.
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Storyboard Descripción
scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape
Texto del Guión Gráfico
- 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/)
Atribuciones de la Imagen
- X-ray ensemble - genomebiology - (Licencia Attribution )
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