Lesson Plan: 5B.4.09

Hamble Lesson Observation Plan
Learning About
How was the structure of DNA discovered?
Keywords:
  • DNA (3)
  • X-ray crystallography (1)
  • Replicated (1)
  • Bases (1)
  • Helical proteins (1)
  • Double helix (1)
Memory Anchor:
Method Precise Learning Objective Linked Question / Activity
(Designed for maximum working out)
Stepping Stones Pitstop Check
(Thinking Map)
T Before the discovery of the DNA structure, Pauling had already discovered helical proteins and Chargaff had already discovered there were always equal numbers of bases A and T and also equal numbers of C and G. What role did Pauling and Chargaff, have in the developing the DNA model?

Watch: https://www.youtube.com/v/VegLVn_1oCE (4 mins)

T Watson and Crick worked out the shape of the DNA double helix and how it could be replicated. What role did Watson and Crick have in the developing the DNA model?

T Franklin and Wilkins used the new technology of X-ray crystallography to make photographs of the DNA molecule and revealing its shape. Watson and Crick didn’t properly acknowledge the research carried out by Franklin and Wilkins they used to come up with their discovery. What role did Franklin and Wilkins have in the developing the DNA model?

W The factors needed for scientific understanding to progress including the improvements in technology and building on discoveries by other scientists. What factors are needed for scientific understanding to progress?

Links To the Big Ideas
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