alleryIf DNA is helical, what pattern did the prediction expect in X-ray diffraction?
AA ring shape
BA plain dot
CAn x shape
DA straight line
Answer & Solution
Correct answer: C. An x shape
1. Watson and Crick hypothesised a helical DNA.
2. This implied an X-ray diffraction pattern that is x shaped.
3. Franklin's photo 51 showed the x shape, confirming the helix.
_Source: Wikipedia, Scientific method, Predictions from the hypothesis_
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