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Image Attributions:
X-ray ensemble (https://www.flickr.com/photos/99249556@N03/9344158296/) - genomebiology - Licență: Attribution (http://creativecommons.org/licenses/by/2.0/)
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.
Hypothesis
Crick and Watson hypothesized that DNA had a helical (spiral) shape.
Prediction
If the form of DNA were helical, then its X-ray diffraction pattern would be X-shaped.
Experiment
Rosalind Franklin was carrying out research at Kings College, London. She looked at the structure of DNA using X-ray diffraction.
Analysis
The images were shared with Watson and Crick who analyzed the images and discovered that the pattern matched their hypothesis and prediction.
Part of the Scientific Method
Example
DNA has four bases.
I think __________ will happen.
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.